Western Electric 171a info

[Ciro Marzio]

I am looking for all the possible construction infos for Western Electric 171A outputs.
Has anyone worked on them?
Hope someone can help

 

[emrr]

Doc Hoyer, deceased, is the only person I can think of. Wonder where his archives have gone.....

 

[Ciro Marzio]

I hope someone else can help