We selected Hepta Slab as the main font for our 2021 website update. It was designed by Mike LaGattuta and published by Google fonts.
You can see this font in use on our sign in front of the shop. In the 1970s, when I worked for Herb Lubalin, I specified ITC Lubalin Graph quite often. Graph was the slab serif version of Avant Garde.
When I worked at Pushpin Studios I was told not to use Lubalin Graph, but instead, to use Memphis. Thanks Seymour. Good idea.