Here's a link to a 766 page rare book, in German language. But even if you don't read German, you can enjoy the pictures. They do take some searching though. Here's a page of it with pix of some early pieces, and you can jump to other pages with pix using the thumbnails on the left. This goes way back to the beginning, with pix of some early engines of war in the front (Mr. Phalanx will like that.)
http://www.literature.at/webinterface/library/ALO-BOOK_V01?objid=13437&page=44&zoom=3&ocr=
