This is a fascinating piece of early 20th-century postal history, an original mailed envelope from Chicago, Illinois, to Bloomington, Indiana, dated April 27, 1910. Thurston Teachers Agency Letter + Cover for Teacher Wahpeton ND. The front features a clear Chicago postmark and a one-cent Benjamin Franklin U.S. postage stamp, addressed in elegant script to "Mrs. Alonzo Knipe." The return address, though partially abbreviated, indicates "ROOM 600 WABASH AVENUE CHIC.GO."

The reverse side of the cover bears a distinct Bloomington, Indiana, receiving postmark dated April 28, 1910, marking its arrival. This artifact offers a tangible connection to communication practices of the era, showcasing the efficiency of the U.S. postal service over a century ago. It's a prime example for collectors interested in philately, Indiana history, Chicago ephemera, or early 1900s Americana, preserving a slice of everyday life from a bygone era.