I came across a series of photos from the H.W. Hocker (Harold Willets Hocker) Manufacturing Company of Lewes, Sussex County, Delaware during a search at the Library of Congress’ website. You can go see more images there.
Harold Willets Hocker, son of John William and Georgia (Tunnell) Hocker, was born 23 April 1892 in Philadelphia, Pennsylvania and died in December 1981 in Lewes, Sussex County, Delaware. He was a descendant of Johan Georg Hacker of Erdenheim, Montgomery County, Pennsylvania.