OK, that makes sense. I've found several references that describe it as 12 pages. What I have is THREE typewritten pages. I can tell it is original type, as I can feel the period and comma and other miscellaneous letter bumps on the rear of the paper.
Here's the description:
3 pages, 5.75 x 9.25 inches tall. No date, circa 1938. Three single-sided single-spaced typed pages, folded in thirds and stapled into a construction paper wrapper. NOT a mimeograph or photocopy; this is an original typed manuscript. From the private reference collection of the Estate of S. Harris Dalrymple. Mr. Dalrymple ("Dalrymple the Magician") was a Senior Computer Engineer at McDonnell Douglas Astronautics and an accomplished amateur stage magician. Matte pictorial wraps w/ stapled spine. FAIR: 4 punched holes in spine (through wrapper only, not pages); wear to corners; small diagonal cut to wrapper at spine bottom; top spine corner frayed. owner name [Dalrymple] at top of 1st typed page; general modest age-tanning; slight brittleness.