Why are Investment Banks, "Banks"? What did Glass Steagall Do?

"17 rare books, worth $ millions … stolen from venture capitalist John Hay Whitney's Long Island home decades ago have been recovered." (Shift to Wikipeida on Whitney 1904-1982.) … inherited a large fortune from his father, making him one of the wealthiest people in the United States. In 1929, he participated in a hostile takeover of Lee, Higginson & Co.*** with Langbourne Willliams, rising to the position of chairman of the board at just 29 years old. In 1946, after serving in the OSS during WW2, he founded J. H. Whitney & Company, the oldest venture capital firm in the...