A. Grubert was a dealer in natural history specimens based in Berlin (Turmstrasse 37, Berlin N.W.21) during the early 20th century. He dealt in "first class and showy" tropical butterflies and beetles, advertising in publications like The Entomologist and Entomologische Litteraturblätter around 1905–1907.
Dr. G. Grübler & Co. was a pioneering German chemical company founded by Dr. Georg Grübler in 1880 in Leipzig, Germany. It specialized in manufacturing high-quality biological stains, dyes, and microscopic reagents. Renowned for reliability, the company was a crucial supplier to researchers worldwide before WWI, with products later continued by Chroma Gesellschaft-Schmid GMBH.
