Though the majority of the Met's initial holdings of Egyptian art came from private collections, items uncovered during the museum's own archeological excavations, carried out between 1906 and 1941, constitute almost half of the current collection. More than 26,000 separate pieces of Egyptian art from the Paleolithic era through the Ptolemaic era constitute the Met's Egyptian collection, and almost all of them are on display in the museum's massive wing of 40 Egyptian galleries. Among the most valuable pieces in the Met's Egyptian collection are 13 wooden models (of the total 24 models found together, 12 models and 1 offering bearer figure is at the Met, while the remaining 10 models and 1 offering bearer figure are in the Egyptian Museum in Cairo), discovered in a tomb in the Southern Asasif in western Thebes in 1920. These models depict, in unparalleled detail, a cross-section of Egyptian life in the early Middle Kingdom: boats, gardens, and scenes of daily life are represented in miniature. William the Faience Hippopotamus is a miniature shown at right.