An all-caps alphabet drawn by Marcia Loeb and shown in New Art Deco Alphabets (Dover, 1975). Rainbow is a multiline variant.
Digitizations include Stefan Lundhem’s Billie (FyrisFonts, 2000) and John Wollring’s ML ZigZag (Koeiekat, 2009). Kerosene Boxley (Match & Kerosene, 2009, discontinued) is based on Rainbow and Zig Zag [Devroye].