There appears to be an extant portrait picture of the obscure Lovecraft correspondent from Providence, Frederick Allen Wesley of 6 Hammond Street….

   Rhode Island Historical Society–Graphics Dept.:
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   1. Ink drawing, “Frederick Allen Wesley” (call# Graphics XXB Painting T652 1) [ink drawing by Stacy Tolman]

Source: Unveiled: a directory and guide to 19th century born artists active in Rhode Island, and where to find their work in publicly accessible Rhode Island collections, by Elinor L. Nacheman. (2007).

Stacy Tolman. (1860-1935) [portrait]. “He was an early member of the Providence Art Club, and Providence Watercolor Club. His studio, previously used by Charles Walter Stetson, was in the Fleur de Lis Building, in Providence with Sidney Burleigh, George Whitaker, Chester Dodge, Frank Mathewson, and Gertrude Parmelee (Cady). Tolman traveled to Europe and the Middle East to paint, and exhibited at the National Academy of Design, and Pennsylvania Academy of Fine Arts.”

This would seem to link Wesley in some way with the Providence Art Club? And/or to the art scene of the Fleur-de-Lys Studios building (a building which also features in “The Call of Cthulhu”).

Possibly Wesley was an artist or designer himself. I have found a “Wesley, Fred A.” in Rhode Island School of Design Year Book 1903 – Volumes 25-28 – Page 69, taking a course there…

He appears to be taking the first and presumably foundational course, and so was presumably a junior student. If he had been born 1885 (as Ken Faig has found) then in 1903 he would have been of the right age to be an 18 year old freshman at the Rhode Island School of Design. Tolman was then a leading teacher there. One wonders if Wesley might in time have become an assistant apprenticed to Stacy Tolman or one of the other artists in the Fleur-de-Lys Studios?