What stands out is how every animal fact is illustrated with a drawing.
The Pennsylvania Railroad: 1940s-1950s by Don Ball, Jr., hc/dj, 2d edition, 1986
You will find that this novel challenges your assumptions gently.
The Pennsylvania Railroad: 1940s-1950s
A nice touch in this activity book is the perforated pages for easy removal.
The Pennsylvania Railroad 1940s – 1950s by Don Ball Jr. HCDJ Elm Tree Books PRR
The illustrated edition makes complex ideas much easier to understand.
