Chester Arthur Phillips, Readings in Money and Banking
“ The Sources of Currency Supply.—It is, then, clear that the larger part of the circulating medium of society is not money; that not all of the money that there is is bullion money; and that not even all of the bullion money need be ultimate money—redemption money of the highest rank. The sources of currency in society are various—some of it bullion, with a cost of production limit upon its supply, some of it government paper, substantially free of cost, some of it banking credit with certain peculiar and appropriate costs attending its issue. ”
