[484] Birnbaum, pirus. – Birne, pirum.
Adelung-1793: Birnbaum, der
Brockhaus-1911: Birnbaum [2] · Birnbaum
Herder-1854: Birnbaum [3] · Birnbaum [2] · Birnbaum [1]
Meyers-1905: Birnbaum [3] · Birnbaum [2] · Birnbaum [1]
Pagel-1901: Birnbaum, Max · Birnbaum, Friedrich Heinrich Georg · Birnbaum, Friedrich
Pierer-1857: Birnbaum [3] · Birnbaum [2] · Birnbaum [1]