1982 National Register of Historic Places Inventory for Colonial Germantown Historic District:
"Joseph Jacob Shop, c. 1810; alterations c. 1900 and later, two [sic] stories, stucco with wood trim, Georgian Revival style. --- Contributing."

Additional Sources:

• GHS: Historic Buildings Box 1, folder "Germantown Ave. A Century Ago, 1955:" "No. 32 in a Series" (newsclipping with following text as well as image of Blanche Day photo print no. 58 listed at GHS in Photo Scrapbook 6--see below):

  "From the rear, these old houses on the southwest look like a picturesque scene in an ancient foreign town. From the front, however, all is bustle and commerce. Half a dozen small shops occupy the premises from 5918 to 5922 Germantown Avenue, which were originally built by A. Keyser before the Revolutionary War."

• GHS: Photo Scrapbook 6 "Germantowne 100 Years Ago" (1955), compiled and presented by Blanche Day: no. 58 (photograph of the rear of 5918-5922 Germantown Ave. viewed from West Haines Street).