Pay phone family tree?

[Hydrochloride]

I'm just getting into three slot pay phones and I am wondering if there is a W.E. Family tree that shows the evolution of there pay phones. I purchased a W.E. 195g and can not find much on it. The closest " I think is the 197, but when comparing the insides, I see some very big differences.

[Russ Kirk]

I highly recommend this book.
It has the family trees you are seeking.

http://www.amazon.com/Payphone-History-Book-Ron-Knappen/dp/B002LN04MI

Payphone History by Ron Knappen.

[G-Man]

I'm just getting into three slot pay phones and I am wondering if there is a W.E. Family tree that shows the evolution of there pay phones. I purchased a W.E. 195g and can not find much on it. The closest " I think is the 197, but when comparing the insides, I see some very big differences.

There are probably more, but a quick search of the TCI Library yields the following documents covering your payphone.
http://www.telephonecollectors.info/index.php/document-repository/doc_details/3541-c64-241-i3-prepayment-coin-collectors-cb-connections
http://www.telephonecollectors.info/index.php/document-repository/doc_details/3536-c42-143-i1-coin-collectors-conversions

[Hydrochloride]

Thanks for that, my W.E. 195g seems to be not as common as the 197g.