In the 1970s, Vignelli Associates—Massimo and Lella Vignelli—made a bid to design the maps for the Washington Metro. That gig went to Lance Wyman. The Vignelli Archives recently unearthed some presentation boards and design sketches from their bid; CityLab has more details. Cameron Booth notes that these are hardly new discoveries, as they’d appeared recently in Peter Lloyd and Mark Ovenden’s Vignelli Transit Maps, which came out in 2012.

Booth has recreated a digital version of one of Vignelli’s map sketches—a hexagonal grid concept that appeared in Vignelli Transit Maps—as well as a full, modern system diagram in the same style; he’s selling the latter as a poster.