Question: Where did Andy Warhol most likely acquire a mummified human foot?
About the article "Andy Warhol", section "Collections".

Candidate passages:
Warhol was an avid collector.
His friends referred to his numerous collections, which filled not only his four-story townhouse, but also a nearby storage unit, as "Andy's Stuff."
The true extent of his collections was not discovered until after his death, when the Andy Warhol Museum in Pittsburgh took in 641 boxes of his "Stuff.
"Warhol's collections included airplane menus, unpaid invoices, pizza dough, pornographic pulp novels, newspapers, stamps, supermarket flyers, and cookie jars, among other eccentricities.
One of his main collections was his wigs.
Warhol owned over forty and felt very protective of his hairpieces which were sewn by a New York wig-maker from hair imported from Italy.
In 1985 a girl snatched Warhol's wig off his head.
It was later discovered in Warhol's diary entry for that day that he wrote "I don't know what held me back from pushing her over the balcony.
"Another item found in Warhol's boxes at the museum in Pittsburgh was a mummified human foot from Ancient Egypt.
The curator of anthropology at Carnegie Museum of Natural History felt that Warhol most likely found it at a flea market.
The distinguishing factor between the process of animal and human mummification is when the two types were mummified.
Humans had been mummified consistently since the days of the early conquerors of Lower Egypt, hundreds of years before even the first animal was mummified.
The earliest signs of animal mummies are dated to the Badarian Predynastic Period (5500–4000BC) after the unification of upper and lower Egypt.
It is likely that animal mummies did not exist earlier on because mummification was less accessible primarily due to cost.
In general, the mummifying of animals was not given the careful attention afforded to humans.
Mummies sold to pilgrims as offerings were only minimally treated, and unlike humans, even the most sacred of animals, such as the Apis bulls, did not have their internal organs preserved.
The large scale of production indicates that relatively little care and expense was involved in animal preparation compared to human mummies.
However, recent radiological studies by archeologists indicate that animal mummification may more closely follow human mummification than was originally thought.
The accepted view is that animals were merely wrapped in coarse linen bandages and/or dipped in resin before death.
However, as with human mummification there was a range in terms of the quality of treatments.
A simple visual analysis of the mummies suggests that some animal mummies were treated with the same complexity as those of humans.
Egyptians treated animals with great respect, regarding them both as domestic pets and representatives of the gods.
The presence of fats, oils, beeswax, sugar gum, petroleum bitumen, and coniferous cedar resins in animal mummies shows that the chemicals used to embalm animals were similar to those used on humans. 
Beginning in the early 1950s, Warhol produced several unbound portfolios of his work.
The first of several bound self-published books by Warhol was "25 Cats Name Sam and One Blue Pussy", printed in 1954 by Seymour Berlin on Arches brand watermarked paper using his blotted line technique for the lithographs.
The original edition was limited to 190 numbered, hand colored copies, using Dr. Martin's ink washes.
Most of these were given by Warhol as gifts to clients and friends.
Copy No.
4, inscribed "Jerry" on the front cover and given to Geraldine Stutz, was used for a facsimile printing in 1987 and the original was auctioned in May 2006 for US $35,000 by Doyle New York.
Other self-published books by Warhol include:  "A Gold Book"  "Wild Raspberries"  "Holy Cats" After gaining fame, Warhol "wrote" several books that were commercially published:  "a, A Novel" (1968, ISBN 0-8021-3553-6) is a literal transcription—containing spelling errors and phonetically written background noise and mumbling—of audio recordings of Ondine and several of Andy Warhol's friends hanging out at the Factory, talking, going out.
"The Philosophy of Andy Warhol (From A to B & Back Again)" (1975, ISBN 0-15-671720-4)—according to Pat Hackett's introduction to "The Andy Warhol Diaries", Pat Hackett did the transcriptions and text for the book based on daily phone conversations, sometimes (when Warhol was traveling) using audio cassettes that Andy Warhol gave her.
Said cassettes contained conversations with Brigid Berlin (also known as Brigid Polk) and former "Interview" magazine editor Bob Colacello.  ""
(1980, ISBN 0-15-672960-1), authored by Warhol and Pat Hackett is a retrospective view of the 1960s and the role of pop art.
"The Andy Warhol Diaries" (1989, ISBN 0-446-39138-7), edited by Pat Hackett, is a diary dictated by Warhol to Hackett in daily phone conversations.
Warhol started the diary to keep track of his expenses after being audited, although it soon evolved to include his personal and cultural observations.
Warhol created the fashion magazine "Interview" that is still published today.
The loopy title script on the cover is thought to be either his own handwriting or that of his mother, Julia Warhola, who would often do text work for his early commercial pieces. 
Beginning in 2007, Bond No.
9 began a licensing partnership with the Andy Warhol Foundation for Visual Arts, allowing for the creation of fragrances bearing the Warhol name, with bottle designs inspired by his works of art.
The fragrances included: "Andy Warhol Silver Factory" (2007), "Andy Warhol Union Square" (2008), "Andy Warhol Lexington Avenue" (2008), "Andy Warhol Success is a Job in New York" (2009), "Andy Warhol Montauk" (2010), and "Andy Warhol by Bond No.
9" (2011).
When the licensing agreement came to a close in 2013, Bond No.
9 kept the scents, but renamed and repackaged them. 
6701 Warhol (1988 AW1) is a main-belt asteroid discovered on January 14, 1988 by A. Mrkos at Klet Observatory.
It is named after artist Andy Warhol.