"Even if you put this envelope in your recycling bin like a good citizen … it cannot be recycled because of that plastic window," Jo says in her video. However, it should be noted that The Cool ...

When the windowed envelope was invented by Americus F. Callahan in 1901 and patented 1902, envelopes became a real problem. Fortunately, one Julius Regenstein of the Transo Envelope Company would ...