United States of America - Oklahoma

In my World envelope collection I do not just want to have envelopes from stamp-issuing countries and territories, but also from other regions. This includes the 50 states of the United States of America. This envelope comes from the state of Oklahoma, lying in the South Central region of the United States. It was the 46th state, admitted in 1907.

Oklahoma is bordered by the state of Texas on the south and west, Kansas on the north, Missouri on the northeast, Arkansas on the east, New Mexico on the west, and Colorado on the northwest. It is the 20th-most extensive and the 28th-most populous of the 50 United States. The state's name is derived from the Choctaw words okla and humma, meaning "red people". It is also known informally by its nickname "The Sooner State", in reference to the non-Native settlers who staked their claims on land before the official opening date of lands in the western Oklahoma Territory or before the Indian Appropriations Act of 1889, which increased European-American settlement in the eastern Indian Territory. Oklahoma Territory and Indian Territory were merged into the State of Oklahoma when it became the 46th state to enter the union on 16 November 1907. Its residents are known as Oklahomans (or colloquially "Okies"), and its capital and largest city is Oklahoma City.

A major producer of natural gas, oil, and agricultural products, Oklahoma relies on an economic base of aviation, energy, telecommunications, and biotechnology. Both Oklahoma City and Tulsa serve as Oklahoma's primary economic anchors, with nearly two-thirds of Oklahomans living within their metropolitan statistical areas.

With ancient mountain ranges, prairie, mesas, and eastern forests, most of Oklahoma lies in the Great Plains, Cross Timbers, and the U.S. Interior Highlands, a region prone to severe weather. More than 25 Native American languages are spoken in Oklahoma, ranking third behind Alaska and California.

Oklahoma is on a confluence of three major American cultural regions and historically served as a route for cattle drives, a destination for Southern settlers, and a government-sanctioned territory for Native Americans.

The stamps were affixed by me and come from the Flags of our nation and Greetings series and the stamp commemorating the 100th anniversary of statehood. I sent the envelope to the post office in the capital Oklahoma City to be postmarked. It arrived back in three weeks with a perfect datestamp inside a transparent cover to protect it from the sorting machine.

Date sent: 6 June 2017

Date postmark: 19 June 2017

Date received: 27 June 2017

Number of days: 21

Envelope in collection: 201