[Boogieman]

Well the Famine Stela mentions the invention of pyramid building by Pharoah Zhoser and high priest Imhotep, and refers to the pyramids as tombs/temples for the king. Then there are the Pyramid Texts, which were inscribed on pyramids and detail the funerary rites and spells for the deceased Pharaohs. The Famine Stela is probably a Ptolemaic copy of an older text, but the Pyramid Texts date back to 2000-2500 BC. There is also the more recent discovery of the tombs of the pyramid builders at Giza, which contained hieroglyphics about the work gangs that built the pyramids.

[El Cid]

I believe Pharaoh Zhoser's references were to step pyramids, not the three great Giza Pyramids.
Although that was an interesting reference to the Famine Stela and Imhotep, as I have read theories that Imhotep and Joseph were one and the same. Anyways, thanks for the references (including the one about the pyramid builders of Giza) and I will check them out later.