The third photo looks like you found the (very) light beer after loading. My experience loading at the Chicken Ranch is that even a rolling frame can be a good workout when you are hand winching.
There is regularly a listing for Holmes literature for the w35 wrecker set, although I think the CMP used the w45, on ebay.
http://cgi.ebay.com/ebaymotors/Holme...sQ5fLiterature