1877 US in baseball; metaphorical usage from 1896, more generally from 1930. Since at least 1870, baseball teams would reissue tickets in case of postponement due to rain, which became known as rain checks.
Update: In fact, the latest update of iPhoto is using Helvetica Neue. And now there's Avenir, a Linotype typeface and Apple's new favorite. It was designed by Adrian Frutiger in 1988, inspired by two old school typefaces created in the 20s: Erbar by Jakob Erbar and Futura by Paul Renner.
Helvetica is one of the most famous and popular typefaces in the world. It lends an air of lucid efficiency to any typographic message with its clean, no-nonsense shapes. The original typeface was called Neue Haas Grotesk, and was designed in 1957 by Max Miedinger for the Haas'sche Schriftgiesserei (Haas Type Foundry) in Switzerland. In 1960 the name was changed to Helvetica (an adaptation of Helvetia, the Latin name for Switzerland).