Mister Rogers takes a field trip to to the US Postal Service to see how people design and make stamps.There’s a heat wave in Make-Believe and the neighbors are trying to keep cool. Handyman Negri delivers the Annual Report to King Friday. There’s extra money in the budget and Lady Elaine wants to use it for brushes to paint the museum,but King Friday has other ideas – he’s planning to use it for the spectacular addition of a swimming pool.