I just had a check returned as “undeliverable”. It was addressed to the EAA (Experiment Aircraft Association) at a post office box in Oshkosh Wisconson. You’d think that in a town with a population of 62,916 (I looked it up), SOMEBODY in the post office would have heard of the organization that operates the fly-in that attacts 700,000 visitors to the city every year and know how to get mail to them. Sheesh.