A photo of a display of photos of the senior staff of The Argus in 1882 - Edward is above the "r" in Argus. The photo is included in the manuscript "The Men who Made the Argus and the Australasian", from the State Library of Victoria. The head shot appeared in his obituary in The Argus in 1892.
Another photo of Chapman with two friends, Joseph Pickersgill and Grattan Riggs, at the Yorick Club is held by the State Library of Victoria: http://handle.slv.vic.gov.au/10381/74752
Chapman and his family lived at a number of different houses in East Melbourne between 1875-c.1896. Their story can be read by clicking the link below.