The Only Ones I Know Of Are The Old Chilton Repair Manuals. The Only Way U Can Get Them Is Used Though. They're Usually Available On Ebay Or If Someone Around Here Has An Extra One....other Than A Chilton's, I Dont Know Of Another One. Hope This Helps
Give Auto Krafters (http://www.autokrafters.com/) a quick look. They have some of the factory service manuals that cover Mavericks. I got a set for my '72 a few months ago.
I just bought a new Chilton from Craig Selvey a month or two ago, give him a try. I think he had multiple books for sale. Another good book I used for years was the Haynes Mustang II manual. It was good for about 95% of my jobs, since the cars are so similar. I bought it new at Hi-Lo/O'Reilly (or maybe AutoZone) about 4 years back, so I assume it is still in print. I also recently borrowed the Chilton's Auto Repair Manual 1973-1980 (BIG brown book for all autos that year) and copied about 50 pages out of it that were Maverick-specific. If you ever need a chapter, or a couple of pages to complete a job, just ask, someone on here will likely e-mail or scan you a copy.