Sources contemporary to Khufu's time give three key pieces of information: One of them was found at the Dakhla Oasis in the Libyan Desert. Khufu's serekh name is carved in a rock inscription reporting the "Mefat-travelling in the year after the 13th cattle count under Hor-Medjedu".R. Kuper and F. Forster: Khufu's 'mefat' expeditions into the Libyan Desert. In: Egyptian Archaeology, vol. 23, Autumn 2003, page 25–28 Photo of the Dachla-inscription The second source can be found in the relieving chambers inside Khufu's pyramid above the burial chamber. One of these inscriptions according to Flinders Petrie mentions a workmen's crew named "friends of Khufu" alongside the note "in the year of the 17th cattle count", but it is questioned if the number of years points to a biennial cattle count, or if the number must be taken verbatim.Michael Haase: Eine Stätte für die Ewigkeit: der Pyramidenkomplex des Cheops aus baulicher, architektonischer und kulturgeschichtlicher Sicht. von Zabern, Mainz 2004, , p. 12-13.
