THOMAS EDISON Laboratory Products Ray Company 1904 RECEIPT Phono Records Sport

Description

I recently discovered a bill or receipt made out by THE RAY CO. The bill was made to a Mr. Wannamaker in South Carolina in June 14, 1904. This company was either a subsidiary or sold products by the  (Thomas) Edison Laboratory products based in Louisville Kentucky (where Edison started first working as a telegraph operator when he was young right after the Civil War).
The list contains a bill for items such as a "Phono" and cords, probably referring to one of Edison's inventions dealing with the phonograph or something similar.
This is a great piece of Edisonian paraphenalia!
PS If anyone can fill me on any details of this company it would be greatly appreciated!