Around 2011, 37signals switched from Interstate to Whitney for their company logo and the logos of their newly launched suite of services: Basecamp, Campfire, and Highrise.
The first 37signals logotype was designed by Carlos Segura using Interstate. The accompanying mark — which survives today — was designed by Ammon Haggerty.
Contributed by Matthew Buchanan
Contributed by Stephen Coles
Contributed by Indra Kupferschmid
Contributed by Florian Hardwig
Contributed by Jasper de Waard
Contributed by Luke Freeman
Photo(s) on Flickr.
Contributed by Timo Klaavo
Contributed by Matthijs Sluiter