The stamp was designed by USPS art director Derry Noyes. The new “Goodnight Moon” stamps are available nationwide and will always be equal in value to the First-Class Mail 1-ounce price.

These proposed price changes, which would take effect starting July 13 if approved, include a 5-cent increase on the Forever Stamp, raising it from 73 to 78 cents. The cost to send postcards ...