Citywide Garage Sale Austin, Texas 1998 Poem

Old coins and bills
Including a One dollar 1810
issued by Mechanical Bank in Saint Louis
An amusing beer mug with a red nose
A medal from the volunteer fire corps in Lubbock
for commendable deeds
A worker’s card, issued by Das Dritte Reich
to Werner Hoffmann 16 years old
printing works apprentice
A copy of Look magazine in plastic
with Marilyn Monroe on the cover
Two very old planes
certainly homemade,
brown and rather well-worn,
with a smell of many long days
in the land of goats and scrub

I wonder: how did Werner Hoffmann die?