I found this on our shelves at work and HAD to see if it was worth some of my cataloguing time. After a few minutes of research, I figured out that the 3-ring binder edition of the ‘Encyclopedia of Construction and Farm Toys’ by Trumm and Zarse (pictured below) contained not one, but several different reference guides arranged by toy type. Sadly, the one hiding on our shelves only contains two.
I came across an online auction listing for a similar version of the book as well. The Internet is simply lovely sometimes.
Item Description: Trumm & Zarse “A Guide to Collecting Farm Toys” Volume I & II Great Reference book 1/64th scale up, in binders both books for one money