But talk about inscriptions on monuments, what about the paperwork? A vast quantity must have been generated during the 1000 years of the old kingdom yet barely a scrap remains.
The mastabas arounf Khufu make it pretty clear who the pyramid was for. There are builder's marks on core blocks of other pyramids (usually cubit markings in red paint.). Blocks seem to have been marked at the quarry with their destinations.
Khufu's causeway (which Herodotus described as covered with reliefs), his mortuary temple, valley temple, and palaces, have all been destroyed, yet sufficient remains to show that, unlike the IIrd and Vth, IVth dynasty architects actually preferred plain undecorated forms ; and indeed, as architecture, how powerful they remain ; even if sponsored by the (megalomaniac?) khufu.