First flight cover from High Point, NC, sent to Portland OR. Philadelphia receiver on the back fills the first flight leg. Chicago Air Mail postmark on the back may explain the MISSENT mark on the front. A Baker & Portland RPO mark on the front shows it is headed to Oregon and delivery. The type III Washington 3-cent stamp is a plate number single...8588. The 2-cent Omaha has a printer tab and there is a 1-cent Columbian and 1-cent Franklin added on for good measure. The flight is 19N7.