Those help a lot if you can find one. I have the repro one for AD trucks and althought it covers every model of the series it has a lot of info.
A similar one for your truck.
http://cgi.ebay.com/ebaymotors/1957-...sQ5fLiterature
Lots of vendors sell them so you might check around a bit. I think that is the same guy I got my AD truck book from.