2018 USA FLOOD MAIL. A cover from Cedar Rapids to Preston, IA, that was in a Ryder truck, leased by a postal carrier firm that became submerged in the river at Preston on Tuesday February 20 2018. An explanatory label has been affixed to the cover. A print out copy of the Telegraph Herald, a local newspaper, accompanies the cover that shows the truck in the river and explains what caused the incident. A very scarce item.