This later became Snowden's Inc. Possibly Henry C. Snowden (born 1838) behind counter (although this does not look like the picture at Findagrave.com), or Samuel W. Hawley (1840-1905)
Advertising "Muresco for wall and ceiling decoration. Superior to Kalsomite or any other wall finish. Manufactured by Benjamin Moore & Co., New York and Chicago."
Advertising "Jap-A-Lac--Made by the Glidden Varnish Co, Cleveland, Ohio--Wears Like Iron" Clock shows :Pap-A-Lac Time." At bottom of sign is a note, "Shinn Did It," indicating sign painter's name, Shinn.