Sources Exhausted

National Sources:

• 83rd-115th Congress: Congressional Pictorial Directory
• 55th Congress: "Autobiographies and portraits of the President, cabinet, Supreme court, and Fifty-fifth Congress"
• 54th Congress: "The United States Red Book"
• 47th Congress: "Public men of to-day; being biographies of the President and Vice-president of the United States, each member of the Cabinet, the United States senators and the members of the House of representatives of the Forty-seventh Congress, the chief justice and the justices of the Supreme court of the United States, and of the governors of the several states"
• 41st Congress: "History of Congress : The Forty-First Congress of the United States, 1869-1871"
• 40th Congress: "History of Congress: The Fortieth Congress of the United States, 1867-1869"
• 35th Congress: "McClees' gallery of photographic portraits of the senators, representatives & delegates of the thirty-fifth Congress." -- photo of Caruthers missing online, get paper copy?
• 30th Congress: "History of Congress, biographical and political comprising memoirs of members of the Congress of the United States drawn from authentic sources."
• "Who's Who in the Pacific Southwest"

State Registers / Blue Books / Statewide resources (these are generally useful for 1900+ around when photos became routine in them):

• Alabama Official and Statistical Register
• Arkansas Historical Report of the Secretary of State
• "A pictorial history of Arkansas"
• Connecticut State Register
• Georgia Official Register
• Illinois Blue Book
• Who's Who In Indiana Politics (1944)
• Biographical dictionary and portrait gallery of the representative men of the United States (Illinois)
• Iowa Red Book
• Kansas Blue Book 1897
• Massachusetts Manual for the General Court
• Michigan Blue Book
• Minnesota Blue Book (Legislative Manual)
• Missouri Blue Book
• "Illustrated History of Nebraska"
• New York Red Book
• North Carolina manual
• Pennsylvania State Legislature and State Senate
• The Pennsylvania Manual
• Nebraska Blue Book
• Ohio Official Roster
• Representing Texas book
• West Virginia Blue Book
• Men of West Virginia, 1903
• Wisconsin Blue Book
• "The Columbian biographical dictionary and portrait gallery of the representative men of the United States : Wisconsin volume"

Web, Misc:

• The Strangest Names In American Political History

Books that seem like they might have photos but didn't:

• Congressional Quarterly's "Members of Congress Since 1789"
• "Biographical Annals of the Civil Government of the United States"

Completed States:

• Alaska
• Arizona
• Colorado
• Hawaii
• Idaho
• Kansas
• Minnesota
• Montana
• New Mexico
• Nevada
• North Dakota
• Oklahoma
• South Dakota
• Utah
• Washington
• Wyoming