Hello all ...vintage O scale is a wonderful wide open field with so many avenues to explore ...
to defend Keith Wills' book ....there is a lot of info and insight packed in the skinny book ....but yes it could easily be 3 x 4 times longer and still only touch the top of the iceberg ...here is a link to another posting about Keith's book
https://ogrforum.ogaugerr.com/...-book-by-keith-wills
Research field is open for all to jump in ... I 've been collecting the vintage O scale 1920's -1955 for about 4 years now ... early on filled up the library with full runs of
Model Maker
Model Railroader
Model Craftsman / MRC
Whistle Stop
O gauge Modeler
Miniature Trains
Model Builder
48 ft early issues
O scale railroading / O gauge railroading
Jim DeBruin's articles in O scale trains
O scale resource there will be an article about vintage trolleys coming out soon
Fortunately ebay will provide you a wall full of research for not a whole lot of $$$$ yes some are available online ..but staring at a screen sucks for hours on end ..
early stuff was not made in the numbers of the later stuff ...so yes harder to find ...but less folks looking .... everything is out there ... just beat the bushes ..... oh yes with luck there will be train shows again ..
.Be-careful collecting vintage O scale what starts out as a piece here and a piece there ...soon your whole basement is filled !!!!
Come on hop in the water tis a big pool ...
Cheers Carey 
