200 voting delegates were authorized by the terms of the convention call for this gathering. The following list of delegates (slightly less than 200) along with their city of residence, nation of birth, and occupation appears in the Duke University collection of papers of the SPA. Some 41 states and the District of Columbia were represented, along with fraternal delegates from 8 foreign language federations and the YPSL.
Arizona
J.R. Barnett --- Chandler --- America --- farmer
Cory Davenport --- Miami --- America --- carpenter
Arkansas
Clay Fulks --- Searcy --- America --- teacher
Dan Hogan --- Huntington --- America --- lawyer & editor
California
Job Harriman --- Los Angeles --- America --- lawyer
Cameron H. King --- San Francisco --- America --- clerk
Harry McKee --- Fresno --- America --- lawyer
Walter Thomas Mills --- Berkeley --- America --- teacher
T.W. Williams --- Los Angeles --- America --- State Secretary SPA
Colorado
W.P. Collins --- Boulder --- America --- apiarian
Jennie McGehe --- Denver --- America --- State Secretary SPA
Connecticut
Martin F. Plunkett --- Wallingford --- America --- State Secretary SPA
P.H. Shea --- New Britain --- "Irish descent" --- salesman
George Spiess, Jr. --- Hartford --- "German descent" --- lecturer
Delaware
L.lP. McGuigan --- Wilmington --- America --- clerk
District of Columbia
Julian Pierce --- Washington --- America --- State Secretary SPA
Florida
Franklin Pimbley --- Tampa --- America --- [???]
George White --- Jacksonville --- America --- State Secretary SPA
Georgia
Mary Raoul Millis --- Atlanta --- America --- State Secretary SPA
Idaho
Elda B. Conly --- Chicago, IL --- America --- bookkeeper
C.F. Fields --- Nampa --- America --- plumber & State Secretary SPA
I.F. Stewart --- Nampa --- America --- music teacher
Illinois
Barney Berlyn --- Chicago --- [???] --- cigar maker
John Berg --- Moline --- [???] --- machinist
Paul H. Castle --- West Frankfort --- [???] --- miner
Clarence Diehl --- Chicago --- [???] --- cigarmaker
Adolph Dreifuss --- Chicago --- Germany --- Translator-Secretary SPA
Samuel H. Holland --- Chicago --- Russia --- lawyer
Robert Howe --- Chicago --- America --- clerk
John C. Kennedy --- Chicago --- America --- State Secretary SPA
Dr. S.A. Koppnagel --- Chicago --- Russia --- physician
Victor Lindquist --- Rock Island --- America --- machinist
Duncan McDonald --- Springfield --- America --- miner
Dr. Karl Sandberg --- Chicago --- [???] --- physician
Indiana
William W. Farmer --- Anderson --- America --- machinist
W.F. Jackman --- Indianapolis --- America --- paper hanger
William H. Henry --- Indianapolis --- America --- lawyer & State Secretary SPA
Florence Wattles --- Kokomo --- [???] --- [???]
Joseph Zimmerman --- Marion --- Russia --- Organizer SPA
Iowa
Charles T. Bowman --- Cedar Rapids --- Sweden --- boilermaker
I.S. McCrillis --- Des Moines --- America --- State Secretary SPA
Harold Metcalf --- Davenport --- [???] --- [???]
Kansas
Ella Baldwin --- Kansas City --- America --- [???]
Ida A. Beloof --- Winfield --- America --- [???]
George W. Kleihege --- Lawrence --- America --- [???]
Milo M. Mitchell --- Kingman --- America --- [???]
Kentucky
Walter J. Millard --- Newport --- [???] --- writer & lecturer
Louisiana
J.R. Jones --- Georgetown --- America --- State Secretary SPA
Maine
Desire Baker --- Fairfield --- America --- accountant
H.J.P. Enemark --- Portland --- Denmark --- shoemaker
Maryland
Maynard Shipley --- Baltimore --- America --- editor
S.L. Young --- Hagerstown --- America --- real estate
Massachusetts
Victor Annalo --- Fitchburg --- Finland --- Secretary Finnish Federation SPA
Abraham Bloom --- Brockton --- [???] --- [???]
Charles E. Fenner --- Worcester --- America --- insurance agent
Eugene Hough --- Newton --- America --- painter
George Makela --- Fitchburg --- Finland --- editor
Louis Marcus --- Boston --- Russia --- cigarmarker
James Oneal --- Boston --- America --- State Secretary SPA
George E. Roewer, Jr. --- Boston --- America --- lawyer
Max H. Schulze --- Holyoake --- Germany --- editor
Frank J. Swrjala --- Fitchburg --- Finland --- editor
Michigan
D.F. Earley --- Detroit --- America --- [???]
Edward O. Foss --- Muskegon --- Germany --- physician
H.A. Hedden --- Jackson --- [???] --- carpenter
John Keracher --- Detroit --- Scotland --- State Secretary SPA
John Kiiskila --- Hancock --- Finland --- [???]
Al Renner --- Detroit --- [???] --- [???]
Maurice Sugar --- Detroit --- America --- lawyer
Robert Westfall --- Detroit --- [???] --- [???]
Minnesota
F.W. Adams --- Minneapolis --- England --- [???]
B.J. Lacher --- Minneapolis --- "Swiss" --- [???]
Anna A. Maley --- Minneapolis --- America --- teacher & stenographer
Charles Rastedt --- Minneapolis --- Finland --- [???]
George Sahlman --- Cloquet --- Finland --- clothing manager
W.A. Stafford --- Minneapolis --- America --- [???]
L. Vanderbergh --- Minneapolis --- Holland --- painter & decorator\
O.M. Wassing --- Minneapolis --- America --- [???]
Missouri
W.M. Brandt --- St. Louis --- America --- cigarmaker
Kate Richards O'Hare --- St. Louis --- America ---editor
G.A. Hoehn --- St. Louis --- Germany --- journalist
Montana
Albert F. Meissner --- Butte --- [???] --- boilermaker
J.J. McElroy --- McElroy --- [???] --- [???]
Nebraska
G.C. Porter --- Omaha --- America --- [???]
New Hampshire
P.J. Leonard --- Concord --- Ireland ---- baker
New Jersey
Valentine Bausch --- Jersey City --- America --- [???]
George Goebel --- Newark --- America --- [???]
Henry Green --- Newark --- Romania --- [???]
Milo C. Jones --- Newark --- America --- State Secretary SPA
Frederick Krafft --- Ridgefield --- America --- [???]
Patrick L. Quinlan --- Passaic --- Ireland --- [???]
James M. Reilly --- New York City --- America --- traveling salesman
New Mexico
Walter B. Dillon --- Las Vegas --- America --- bookkeeper
S. Parks --- Las Cruces --- America --- jeweler
New York
Allan L. Benson --- Yonkers --- America --- journalist & writer
Axel W. Berggren --- Jamestown --- America --- sheet metal worker
F.G. Biedenkapp --- Brooklyn --- Germany ---- [???]
Louis B. Boudin -- Brooklyn --- [Russia] --- lawyer
Joseph D. Cannon --- New York --- America --- miner
Julius Gerber --- New York City --- [Riga, Latvia, Russian Empire] --- sheet metal worker
Morris Hillquit --- New York --- [Riga, Latvia] Russia --- lawyer
William Hilsdorf --- Rochester --- America --- lithographer
Algernon Lee --- New York --- America --- teacher
Ludwig Lore --- Brooklyn --- [Germany] --- [editor]
Max Ludlow --- New York City --- [???] --- [???]
Stephen J. Mahoney --- Buffalo --- America --- retail clerk
Charles W. Noonan --- Schenectady --- Canada --- metal polisher
Moses Oppenheimer --- New York --- [Bavaria, Germany] --- [???]
A. Pauly -- Brooklyn --- [???] --- [???]
John C. Rovitch --- Bronx --- Russia --- [???]
Fred Sander --- Syracuse --- America --- [???]
James C. Sheahan --- Albany --- America -- plasterer
U. Solomon --- New York City --- [???] --- [???]
North Dakota
C.C. Loomis -- Maxbass --- America --- [???]
H.R. Martinson -- Minot --- America --- [???]
L.M. Shelden --- Liston (?) --- America --- [???]
Ohio
Charles Baker --- Hamilton --- America --- safe worker
Willam Barnard --- Cleveland --- [???] --- [???]
Tom Clifford --- Cleveland --- America --- printer
Joseph Jodlbauer --- Clevland --- Austria --- [???]
Frank Midney --- Toldeo --- [???] --- [???]
William Patterson --- Toledo --- [???] --- [???]
Marguerite Prevey --- Akron --- [America] --- [???]
C.E. Ruthenberg --- Cleveland --- America --- purchasing agent
Alfred Wagenknecht --- Lakewood --- Germany --- State Secretary SPA
Scott Wilkins --- Wapakanota (?) --- America --- real estate agent
Oklahoma
W.N. Conley --- Allen --- America --- railroad man
J.T. Cumbie --- Lindsay --- America --- lecturer
J. Houchin --- Moore --- America --- farmer
A.T. Jones --- Sentinel --- America --- [???]
Harold L. Oder --- Dewey --- America --- repair man
J.A. Lewis --- Tarlequah --- America --- [???]
Minos --- Parker --- America --- [???]
E.L. Moore --- Wagoner --- America --- [???]
Russell --- Elk City --- America --- salesman
A.C. Sechrist --- Lawton --- America --- [???]
T.B. Smith --- Hominy --- America --- carpenter
S.C. Stair --- Walter --- America --- farmer
Stanwood --- Stroud --- America --- [???]
W.W. Terry --- Ringwood --- America --- [???]
Thompson --- Roll --- America --- [???]
S.L. Thurmond --- Caney --- America --- farmer
H.C. Tuttle --- Tulsa --- America --- linotype operator
Leonard Johnson (ALTERNATE FOR TERRY) --- Welutka --- America --- farmer
S.W. Samplet (ALTERNATE FOR GEIST) -- America --- [???]
Oregon
Victor J. McCone --- Portland --- America --- State Secretary SPA
William N. Reivo --- Astoria --- Finland --- [???]
Albert Streiff --- Portland --- America --- [???]
Pennsylvania
William Adams --- Wilkinsburg --- America --- agent
J. Mahlon Barnes --- Philadelphia --- America --- cigarmaker
Dalton T. Clarke --- Washington --- America --- [???]
Mary Garber --- Greensburg --- America --- [???]
Edward Hayden --- Mineral Point --- America --- molder
William J. Higgins --- Philadelphia --- America --- [???]
John R. McKeowin --- Farrell --- America --- tin worker
H.E. Myers --- York --- America --- cigarmaker
Maude Ross --- Oil City --- [???] --- [???]
Henry Stump --- Pittsburgh --- America --- cigarmaker
Jane Tate --- Pittsburgh --- Engand --- teacher
C. William Thompson --- York --- America --- editor
Birch L. Wilson --- Reading --- America --- lawyer
Rhode Island
Joseph M. Coldwell --- Providence --- America --- shoemaker
E.W. Theinert --- Albion --- America --- farmer
South Dakota (each delegate 1/2 vote)
E.F. Atwood --- Sisseton --- America --- gardner
W.P,. Butler --- Aberdeen --- America --- civil engineer
F.L. Fairchild --- Philip --- America --- farmer
I.M. Iverson --- Madison --- America --- engineer
J.R. Catton (ALTERNATE) --- Wanboy --- America --- [???]
Texas
William S. Simpson --- Cisco --- [???] --- [???]
Utah
Murray F King --- Salt Lake City --- [???] --- [???]
C.T. Stoney --- Salt Lake City --- [???] --- [???]
Virginia
J.C. Duke --- Richmond --- America --- [???]
Washington
S. Bonnevie --- Everett --- America --- [???]
Emil Herman --- Everett --- America --- State Secretary SPA
Laura M. House --- Spokane --- America --- [???]
L.E. Katterfeld --- Seattle --- [Germany] --- [???]
Ed Maurer --- North Yakima --- America --- business agent
Kate Sadler --- Seattle --- [???] --- [???]
Joseph Thomas --- Aberdeen --- [???] --- [???]
West Virginia
G.W. Gillespie --- Huntington --- America --- [???]
M.S. Holt --- Weston --- America --- physician
Wisconsin
Victor L. Berger --- Milwaukee --- Austria --- Editor
Robert Busch --- Milwaukee --- Germany --- livery
W.R. Gaylord --- Milwaukee --- America --- lawyer
Leo Krzycki --- Milwaukee --- America --- laundry
N.P. Nielsen --- Racine --- Denmark --- [???]
Emil Seidel --- Milwaukee -- America --- patternmaker
Gerrit T. Thorn --- Osh Kosh --- America --- lawyer
Wyoming
George E. Bateman --- Ackme --- [???] --- [???]
W.W. Paterson --- Rock Springs --- [???] --- [???]
FRATERNAL DELEGATES (non-voting)
Foreign-Speaking Organizations
Josef Novak (Bohemian) --- newspaper reporter
Santeri Nuorteva (Finnish) --- editor
R. Zickmann (German) --- editor
John LaDuca (Italian) --- Translator-Secretary SPA
Max Goldfarb (Jewish) --- [???]
Theodore Breslauer (Polish) --- [???]
N. Juel Christensen (Scandinavian) --- Translator-Secretary SPA
Frank Petrich (South Slavic) --- Translator-Secretary SPA
Young People's Socialist League
William F. Kruse --- Executive Secretary YPSL
source: Document "Delegates to National Emergency Convention Held April 7th to 14th, 1917 at St. Louis, Mo." (7 pages) on Socialist Party of America Papers microfilm (Duke University), reel 6.