Stig Lönngren (1924-2022) received his carpentry qualifications in 1946. He went on to become an important Swedish interior architect, working with Carl-Axel Acking, Sven Hesselgren, Arne Rudberger, KF arkitektkontor, and, from 1965, with Peter Celsing. Lönngren was also one of the founders of the HI group –a group of sixteen master craftsmen and interior architects who strove to renew Swedish furniture design during the first half of the 1960s.

Stig Lönngren's personal collection.