Well I had a look at the picture on the back of this book which has a train (being pulled by Tootle – I vaguely remember Tootle) and the train had all of these characters that appeared in the Little Golden Books (though Big Bird was a little too big for the train, so he had to walk along beside it)....
Lame little board book of photos of veggies and fruits, I suppose intended to condition toddlers to consider them desirable food sources. Probably not highly effective.