This is a Barnhart & Son (just the singular Son this time, though other stamps from 1986 have plural Sons) stamp on the west side of North Fairview Avenue between Fernwood and Saginaw.
The variation in name is interesting, but what really catches my eye when I walk this block is some graffiti in the adjacent slab. It’s interesting to note that although this particular sidewalk must have been poured in the 1990s (I think that says 1996, though it’s pretty messy), Red Buddy’s birth year matches the date on several nearby Barnhart stamps.