The ongoing series of typographic posters designed by Pentagram’s Michael Bierut for the Yale School of Architecture has made use of literally hundreds of different fonts since the series began in 1998. For the poster announcing the school’s fall 2014 lectures and exhibitions, Bierut and designer Jessica Svendsen wanted to try Maelstrom, an unusual new font by Kris Sowersby of Klim Type Foundry. The reversed-stress typeface makes the typically thick strokes of a letter thin, and the thin strokes thick. The font’s architectural quality is brought out in the poster, which stacks the letterforms and their heavy horizontals into a typographic structure. (The designers made some small modifications to the “E” and “F” to slightly improve legibility.) The school’s circular “Y” emblem also appears in Maelstrom.