Spartan, produced in the late 1930s, was Mergenthaler Linotype and ATF’s knockoff of the extremely popular Futura (Bauer). If you see Futura in a magazine or newspaper published in mid-century America, there’s a good chance it’s actually Spartan (or the other followers: Twentieth Century, Tempo, or Vogue). As is the case with many imitations, Spartan offered some things the original did not: such as a double-story alternate ‘a’ (shown in the Linotype specimen), special “Advertising Figures”, and unique “Classified” cuts (released later) for very small type. The originality of the Classified fonts could explain why they are the only styles available in digital form. For a digitization of Spartan that emulates a rough printed impression, check out Mark Simonson’s Metallophile.