Prevention of fraud in promotion or sale of securities : hearings before the Subcommittee on Insurance and Banks of the Committee on the District of Columbia, United States Senate, Seventy-first Congress, third session, on S. 1332, a bill to prevent fraudulent practices in the promotion of sale of stocks, bonds, and other securities sold of offered for sale within the District of Columbia; to register persons selling stocks, bonds, or other securities; and to provide punishment for the fraudulent or unauthorized sale of the same and S. 3491, a bill to prevent fraud in the promotion or sale of stock, bonds, or other securities sold or offered for sale within the District of Columbia; to control the sale of the same; to register persons selling stocks, bonds, of other securities; and to provide punishment for the fraudulent or unauthorized sale of the same; to make uniform the law in relation thereto, and for other purposes, January 16 and 20, 1931.