The following article is a wealth of information regarding the Palmerton Block. In 1876, the wooden structure that stood at this corner burned down and the first of two brick structures was completed (the second building was built in 1892 after a devastating fire in 1891):
L.S. Palmerton, as mentioned in the above article on prices, is shown in the picture below with a group of men in front of L.S.'s lunchroom:
Personally, I think the dog posing with them is quite adorable!