File:J A Voelcker.jpgDescriptionJ A Voelcker.jpg Portrait of J. A. Voelcker Date circa 1862 date QS:P,+1862-00-00T00:00:00Z/9,P1480,Q5727902 Source ArtUK - copy of painting
File:J A Voelcker CIE.jpgDescriptionJ A Voelcker CIE.jpg John Augustus Voelcker c. 1915 Date 1916 Source Frontispiece of Russell, E. J. and J A Voelcker (1916) Fifty years of field