Alex passed this on to me and I thought I'd pass it along here. Although M&M doesn't get anything from this, I thought you guys would like to see this:https://www.hemmings.com/index.cfm/fuseaction/shop.books&CFID=22937743&CFTOKEN=16035408
Like Alex says, any Mustang book is worth $5. I just ordered three, the Mustang book, the books on Mercury and Post War Fords. 
The sale expires 4/12
------------------
'70 Mustang Mach 1 351C 4V/FMX/3.25 Open
'70 Mustang Convertible 250 I6/3 speed/2.79 Open
'72 Mustang Sprint Hardtop 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip