This cover, mailed on June 6, 1907, is from the Superior Manufacturing Co. in St. Louis, manufacturers of the "Superior Petticoats."

It is addressed to Max Herskowitz, who arrived in Oklahoma City with his wife Hermine in 1891. They had 4 sons and 4 daughters. Max built a 12 story brick building and started the Herskowitz Department store. On November, 16, 1907, Oklahoma became the 46th state, so this cover was mailed while Oklahoma was still a territory.
The stamp on the cover is Scott #329, the 2c Founding of Jamestown, issued on April 26, 1907:
