...realizing that the sojourn of the Israelites in Egypt took place not during the New Kingdom but during the preceding Middle Kingdom, in order to find out whether the personality of Joseph or the patron of the early stage of his career, Potiphar, is referred to in the historical documents, we have to look into those of the Middle Kingdom. The task appears simple. According to the Book of Genesis Potiphar was "an officer of Pharaoh, captain of the guard." In the register of the private names to the Ancient Records of Egypt by James Breasted, we find the name Ptahwer.
Ptahwer was at the service of the Pharaoh Amenemhet III of the Twelfth Dynasty of the Middle Kingdom. According to an inscription of Ptahwer at Sarbut el-Khadem in Sinai dated in the forty-fifth year of Amenemhet III, his office was that of "master of the double cabinet, chief of the treasury." ...
The inscription records the successful accomplishment of some peaceful expedition. Since there is only one Ptahwer in the historical documents, and since he lived in the time when we expect to find him, we are probably not wrong in identifying the biblical Potiphar with the historical Ptahwer.
This being the conclusion concerning Potiphar, we are curious to find whether any mention of Joseph is found in historical documents, too. the fact that from the great and glorious age of the Middle Kingdom only a very few historical inscriptions are extant. Since a great famine took place in the days of Joseph, it is, of course, important to trace such a famine in the age of which we speak. In the days of Amenemhet III there occurred in Egypt a famine enduring nine long years...
Thus it seems that the Pharaoh in whose days was the seven years' famine was the successor of the Pharaoh in whose days began the rise of Joseph's career (if Yatu is Joseph). Potiphar, who lived under Amenemhet III, probably lived also under his successor.Joseph and Potiphar | Immanuel Velikovsky | Collected Essays
[snip] There are autochthonous Arab traditions about the wandering tribes led by Mosaikaia, his brother Arnran, and his sister Zeripha. These traditions have not been borrowed from the Old Testament or rabbinical tradition. From the Bible and Midrashim, the Arabs culled much of the content of the Koran, but they did not realize that their traditions about Mosaikaia (and the catastrophe that took place in his time) are of independent origin, though referring to the same persons and events. [/snip]Historical-Geographical Dictionary | Desert of Wandering | Immanuel Velikovsky