Mason is an obscure Providence builder/architect whose three known buildings date from the late 1860s. Only two are known to survive, this and the Kendrick House up the street (514 Broadway). While Kendrick is larger and more elaborate, both share similar forms and detail used in a charmingly awkward fashion. Particularly striking here is the large dormer, shaped like a big, lacy sunbonnet that dominates the façade.
– 2003 Guide to Providence Architecture