I've just released a new book on the Main Street Horse-Drawn Streetcar. It's a fun and bright book covering why's behind Main Street, horsecars in America, the wonderful Disney horses and their care, riding the streetcar, and the engineering behind it all. It ends with an Art, Photo, 3D Gallery. If you are a fan of Main Street or a fan of Walt Disney World history, I think you would enjoy the book.
I'm not allowed to post a URL, but you can find the book by going to lulu.com and searching for "disney main street trolley book." This release is an ebook (pdf format.) The printed version is coming in a couple of weeks.
A number of folks on this forum helped me with the book, so a big thanks goes out to them.