No example of a barter economy, pure and simple, has ever been described, let alone the emergence from it of money; all available ethnography suggests that there never has been such a thing Caroline Humphrey, Barter and Economic Disintegration (1985)
In the library visitors can find old and out-of-print books, newspaper articles, pamphlets, bank balance sheets, government gazette publications and various other items.
These are public domain, either due to the type of publication (e.g. laws published in the government gazette, balance sheets published in the press, etc) or due to the expiration of the copyright protection (e.g. the author has died more than 70 years ago).
I have found these materials of great usefulness in conducting research and I publish them for the benefit of other researchers like me.
To access these works click below.