Numerous graffiti of red ochre paint were found covering the limestone walls of all four newly discovered chambers. Apart from leveling lines and indication marks for masons, multiple hieroglyphic inscriptions spell out the names of work-gangs. Those names, which were also found in other Egyptian pyramids like that of Menkaure and Sahure, usually included the name of the pharaoh for whom they were working.[187][13] The blocks must have received the inscriptions before the chambers became inaccessible during construction. Their orientation, often side-ways or upside down, and their sometimes being partially covered by blocks, seems to indicate that the stones were inscribed before being laid.[188]
The inscriptions, correctly deciphered only decades after discovery, read as follows:[13]

"The gang, The Horus Mededuw-is-the-purifier-of-the-two-lands."Found once in relieving chamber 3. (Mededuw being Khufu's Horus name.)"The gang, The Horus Mededuw-is-pure" Found seven times in chamber 4.
"The gang, Khufu-excites-love" Found once in chamber 5 (top chamber).
“The gang, The-white-crown-of Khnumkhuwfuw-is-powerful” Found once in chambers 2 and 3, ten times in chamber 4 and twice in chamber 5. (Khnum-Khufu being Khufu's full birth name.)