They always smoked cigars while doing the work.

Yeah, my father-in-law was the head of a medical laboratory in Racine, WI.
Everyone in the lab smoked cigarettes while working.

Times have changed in many ways!

These photos have been digitized and are used in medical schools today.

Very neat. What a terrific legacy.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"