Sources Exhausted

National Sources:

• Congressional Pictorial Directory

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
• Connecticut State Register
• Georgia Official Register
• Illinois Blue Book
• Iowa Red Book
• Massachusetts Manual for the General Court
• Michigan Blue Book
• Minnesota Blue Book (Legislative Manual)
• Missouri Blue Book
• New York Red Book
• North Carolina manual
• Pennsylvania State Legislature and State Senate
• Nebraska Blue Book
• Representing Texas book
• West Virginia Blue Book
• Wisconsin Blue Book

Not exhausted:

• Pennsylvania Manual (mostly under copyright, somehow?)

Completed States:

• Alaska
• Arizona
• Hawaii
• Idaho
• Montana
• New Mexico
• North Dakota
• Oklahoma
• South Dakota
• Utah
• Washington
• Wyoming