Kind of interested in the 1940's and 50's MG world. Talked with the late Gordon Ingram through Mr. Tom Nelson, and later got some extra sales brochures and manuals that Mr Nelson was selling from his extensive SMG library and reference collection.
Here are some pics of the covers and from inside. I was told by some Ingram experts that the Erquiaga sales brochure shows the 1st model Ingram SMG#1.............but that is open for debate. Since the Erquiaga Arms Company was raided in MArch 1965, the manual on the left would then predate March 1965. No idea when the second manual is from, but could be from the same time frame as Ingram's prototypes were seized in the raid. The right Ingram manual shows the later prototypes compared to what was considered an normal SMG available on the surplus market (MP40 and Thompson). These pics were also duplicated in Tom Nelson's World 's SMGs, and the MAC MAN.
Pardon the Email printed on the pics. Too many people have contacted me through other boards as folks are reusing my pics for less than honorable means.
Last pic shows a Guns Magazine issue with an article written by SOF's R.K. Brown on the M11. It often shows up in nice shape on Ebay as Guns Magazine from August 1971.