From the Pri & Sec Leads descriptions, these Transformers kind of sound like Audio types (i.e.: Impedance Matching - 25V to 70V, etc...)
Other possibilities may be:
a.: Transformers were designed for use with a Vacuum Tube, or Discrete Component Push-Pull Audio Amplifier,
b.: Saturable Reactor Chokes - AKA "Magnetic Amplifiers" (how long has it been since these were mentioned!!!???),
c.: Block Transformers for small multiple output Power Supplies - such as <1990 Disk Drives (5.25" & 8" FDD), Terminal Concentrators / Controllers (like the older IBM 4700/4701 Controllers and the Bunko-Ramo Controllers).
I agree with Tesla; Finding the operating parameters for these Transformers may become more like an epic quest
Good luck with your search, and if you do find out the parameters (voltages per leads), please come back here and let us know the results.