I noticed this insert in the concrete near the Good Harbor Beach footbridge recently, so naturally I was curious and felt compelled to do a little research. First question that came to mind was “What’s granolithic?” In case you were didn’t know either, it’s a type of construction material made of cement and fine granite (or other material). Apparently C.W. Pratt of Gloucester provided such a service for a period of time perhaps around the 1930s. I found Charles (contractor) and Helen Pratt with children Dana, Carlotta, Charles Jr., Ralph and Donald along with his mother Bridget living in Gloucester in the 1920 census. This matches up with the 1937 City Directory information you see here. His draft registration for WWI indicates home on Essex Ave and business on Maplewood. It was an interesting glimpse into Gloucester’s past. It pays to look down at your feet once in a chile.