‘Siebel Flugzeugwerke’ – complex factories for ‘Siebel’, aircraft manufacturer
Halle (Saale), Saxony-Anhalt, Germany; 1939-44 (destroyed/dismantled)

Lois Welzenbacher

see the site | remaining building
+ about the architect | information 1, 2, 3

via “Lois Welzenbacher, 1889-1955”, Friedrich Achleitner, Ottokar Uhl; Residenz Verlag, Salzburg (1968)