According to the National Postal Museum’s Arago website, “…during the Civil War, the Union blockade proved critical in restricting goods from entering and leaving the Confederacy. Southerners faced increasing shortages of supplies, including paper and envelopes. Writers began to use whatever was handy as letter writing paper and envelopes. These items are known by philatelists as adversity covers.” It goes on to say, “Letters and envelopes were fashioned from the backs of ledger sheets, printed circulars, blank pages in