Helbig an Brunn 1863-1889. - Helbig, Wolfgang, 1839-1915
Includes: one letter sent by Helbig to "Akademische Buchdruckerei" of München, one letter in Italian sent by Pietro Rosa to Helbig and forwarded from Helbig to Brunn, one letter in Italian sent by chief of Accademia dei Lincei secretariat Ernesto Mancini to Helbig