associate of
Hogarth, Erichsen & Co.
Other occupation
Kosvitz was a partner to Hogarth, Erichsen & Co from 1856 until 1859. The Sydney Morning Herald, 4 July 1856, page 8; Cavill, Kenneth; Czernis-Ryl, Eva, Brilliant: Australian Gold and Silve 1851-1950; Powerhouse Publishing, Ultimo, NSW, 2011, pp 28, 30.
associate of
Berens, Levi & Seligman
Other occupation
Firm that supplied materials and equipment to Kosvitz