A cast of the Shipton Footprint found in the SITU effects after the headquarters closed down: My indications for the differing contours of it (generalized) are shown at the right. It is quite obvious from the drawing that Sanderson made and published in his appendix B (reprinted below) that he is illustrating the contour breaks shown in the cast and not as they are shown in the photo of the contour breaks in the text as longitudinal lines which run up and down the length of the imprint in the middle of the sole.
A version of this photo was posted on the Southeast Sasquatch Association's blog in 2008:
Sanderson plainly speaks of having seen and handled a "Plaster cast" in the text of his book and some quotes are reprinted below. When I was at SITU headquarters in 1977, what I saw in storage in the library was not a plaster cast but a slab of concrete with the print in the center, in a storage box with carrying straps attached, looking for all the world as if it had been pried out of the lot in front of Grauman's Chinese theatre. I imagine it was portland cement: it was definitely more permanent than any ordinary plaster of paris footprint cast.
Sanderson, Abominable Snowmen, p 279
Also, it is manifest that Mr. Peissel has never seen an imprint or a cast of the foot that made the medium-sized [or Meh-Teh] tracks. They are positively shocking when first seen, being absolutely enormous—and the gaps between the separated toes are enormous too, which could not happen physically if the whole was enlarged by melting and regelation
The Meh-Teh or classical "Abominable Snowman" prints of the Himalayas, at first sight look just about man-sized but, when you handle a plaster cast of one, you get a profound shock. The thing is positively enormous and in some respects rivals the Oh-Mah prints which, though longer, look almost delicate and which are certainly in comparison most "refined." These things, as may be seen from the depiction of an impression of one alongside that of an ordinary human footprint
are grotesque, and bestial. They also show features that, though not at all apelike in fact, digress from the human pattern most widely. They have an enormous big toe; but they also have an even more enormous second toe; and both are widely separated from the other three little toes, and they curl curiously inward toward them. This thing is not human at all.
(5) HUMAN Adult (Cromagnon Man). From clay floor of cave in France. (6) HUMAN Adult (Southern Amerind). From mud of river bank Chishue, Patagonia.
(7) SUBHUMAN (Neanderthaler). From moist clay floor of cave, Toirano, Italy.
(8) ABSM (Guli-yavan type). From a sketch of track in mud, Kirghiz S.S.R.
(9) ABSM (Meh-Teh). From photo of cast made from print in snow, by Eric Shipton. (10) APE (unknown form). Sketch made by Charles Cordier in the Congo (over-all, 30 centimeters). (11) APE (Lowland Gorilla). From photo of cast of foot. (12) APE (Chimpanzee). Outline of extended foot from plaster cast.
The Meh-Teh tracks and prints are, in fact, by far the most puzzling of all, and especially since such persons as Shipton, Bordet, and others obtained clear photographs of them taken from directly above. Here is obviously a bipedal creature of considerable size and weight that inhabits the Himalayas and the ranges north of the Tibetan Plateau. It was the original "Abominable Snowman" and it comes out as the last "abominable enigma."
Emphasis in all cases was added by me.
The statement about the tracks reported by Bordet is untrue. As Napier points out, they are hardly like Shipton's tracks at all (Bigfoot p 48), and neither are the ones reported by Tom Slick or anybody else. The tracks are definitely unique and in fact we can go one better and say the TRACK (Singular) is unique because we have no good proof the other tracks in the same trackway were even good matches for it.
See also Bobbi Short's summary of the Shipton Track photos at Bigfoot Encounters: http://www.bigfootencounters.com/images/shipton.htm