Albert Horatio Slade was born in England.
A painter, Slade had a photography studio in Toronto, Canada in 1879 and was a resident of San Diego during 1887-91. While there, he painted scenes of San Diego Bay and the surrounding area.
The few examples of his extant work are from the brush of a highly competent painter. His watercolors and oils are executed in a realistic style similar to that of the Hudson River painters. CD.
Source: Edan Hughes, “Artists in California, 1786-1940”