I have a canvas mail bag. Measures apprx 6" x 3" with an orange or gold flag hanging from the bottom of it, it measures approx.5' long. It also contains a letter written by a Captain Wm E Lynd of the U S Air Corps to a J W Farson in Payette Id. It was written in Sept of 1930. It says it was sent by "dropped message" Do you think someone might be interested in purchasing this from me?