Found this interesting Trans of inscriptions, and one that specifically mentions Menkaure visiting the Pyramids, etc. to survey the work, and the bringing of the 2 false doors to Giza.
See pdf pg # 129, (text pg. 94).
Also see inscription prior to this which states, ".... Economically it is of importance to note that the king gives whole towns as mortuary endowment, to keep the tomb of the deceased constantly supplied with offerings......."
See pdf pg. #126, (text pg. 94). Also, some other interesting tidbits, I've only just scratched the surface here, who says there are NO building instructions!!!
Campbell's Chamber roof blocks are Tura Limestone until proven otherwise.
THE Cartouche in Campbell's Chamber IS Authentic, as are ALL other RC's Glyphs, until proven otherwise.
"This Forgery 'theory' has more holes than a sieve basket."