Heinz Schumacher was a teacher at the vocational school for sculptors
and stonemasons ("Friedrich-Weinbrenner-Gewerbeschule") in Freiburg im
Breisgau, in the south-west of Germany (close to the French Strasbourg),
and got the academic titles of "Dipl.Ing." (Diplom-Ingenieur, i.e.
engineer with higher eduction) and of professor ("Studienprofessor",
not university professor - sometimes teachers got this title also). For
25 years, until 1974, he had been the director of that school, and I
guess he retired in that year. Because he was born in 1909 (see below),
he was 65 in 1974, so that a retirement in that year is very probable.This information is mainly from an article about the history of the school: http://www.natursteinonline.de/fileadmin/NatursteinDaten/Heftarchiv/2010/NS_10_1_aktuell/Im_Wandel_der_Zeit.pdf It notes also that he teached his pupils about sundials. There is a short note about him in the German journal "Kosmos", Vol. 71, 1975, p. 178, indicating that he was born on 7 September 1909 in Freiburg and that his fields of work were "Steintechnik, Bildhauerei, Sonnenuhren", which means stonemasoning, sculpturing, and sundials. https://www.deutsche-digitale-bibliothek.de/item/3BSQ7VGYIADNCKAO6RRFZQWIEP25RTC5 has an entry for "Schumacher, Heinz Prof. Dipl. Ing." from the collection of biographical newspaper cuttings in the state archive (Landesarchiv) of Baden-Wuerttemberg, indicating that he was born in 1909 in Freiburg and that he was an architect. However, other sources called him a sculptor and stonemason. He also edited a booklet about the opening of the planetarium in his (former) school in March 1975: Das Freiburger Planetarium an der Gewerbeschule II, Freiburg im Breisgau, Friedrichstrasse 51. Festschrift zur Eroeffnung Maerz 1975. Red.: Heinz Schumacher. Freiburg i. Br: Direktion d. Gewerbeschule II, 1975. 21 ungez. Bl. I guess he is no longer alive, but I could not find from an Internet search when he died. Kind regards, Wolfgang Dick --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
