All he wants is some U.S. gelt and a nice pair of elevator shoes.
-- James Ellroy, Blood's a Rover, 2009
Let alone he was always one for a bit of life, you could earn extra gelt in London, for there were always errands to be run, or notes to be delivered, and you got a shilling every time you were sent off to execute such commissions.
-- Georgette Heyer, The Unknown Ajax, 1959
Gelt entered English in the 1890s. It came from the Yiddish word which meant "money."