Not on hand atm, but should be regular 4ths as opposed to the extremely rare early 4ths (about as common as Greyhawk ref. sheets? *jk*) which have the same format but with a GK logo - bonus marks for the unaltered address in the books to go with those per
4th printing with no sticker? and the 2004 thread that's lost its pics, somehow.
Sounds like you're missing a sheet, though. :/ Never enough reference sheets to go around...