The Oxford label ran between 1906-1916 and was sold by Sears. This label replaced the Harvard label. Subsequently, this was replaced by the familiar Silvertone label (see labels for letter 'S').
Above: Operaphone. 1915-1921. Operaphone Manufacturing Corporation and Operaphone Co. Inc. of New York. The first three label examples are from 8" records, all vertical cut. The embossed label is from 1916. The two paper labels are from the 1916-18 time period. The fourth label is from when they converted to the universal cut method and is from the 1919-21 time period. By this time the sides were cut from Pathe masters.
Organ Rhythms. Says on label it's produced by Skating Rhythms, Santa Ana, CA. Probably early 1950s but could be late 1940s.