Bd. 1. A - L. 1876
https://books.google.com/books?id=qB8TAAAAYAAJ
https://books.google.com/books?id=Wl00AAAAMAAJ
https://books.google.com/books?id=Cog6AQAAMAAJ
https://books.google.com/books?id=FTFNAAAAIAAJ
http://hdl.handle.net/2027/coo.31924029582362
http://hdl.handle.net/2027/mdp.39015058359228
http://hdl.handle.net/2027/hvd.32044087107611
http://hdl.handle.net/2027/uc1.$b234470
Bd. 2. M - Z. 1877
https://books.google.com/books?id=Wl00AAAAMAAJ&pg=PA555
https://books.google.com/books?id=FTFNAAAAIAAJ&pg=PA555
http://hdl.handle.net/2027/mdp.39015058359228?urlappend=%3Bseq=565
http://hdl.handle.net/2027/uc1.$b234470?urlappend=%3Bseq=567
Wikipedia, dt.
https://de.wikipedia.org/wiki/Franz_Br%C3%BCmmer
Neue Deutsche Biographie 2 (1955), S. 665
http://www.deutsche-biographie.de/pnd116751460.html
Dräger, Marietta; Lehmann, Sven. Biographie Franz Brümmer
http://nicolai.host6.3-point.de/materialien/franz_bruemmer_bio.pdf