S1, E4: Mitzi is surprised to discover that George, the Postman, seldom gets any letters himself, and so decides to write him one. George is very pleased, and decides to 'save' reading it until later. While out on his rounds, George accidentally loses the letter, and is sad. The Koala Brothers, flying on their daily patrol, spot George looking despondent, and fly down to investigate. They offer to try and spot the lost letter from the air. With Alice’s help, the letter is found. George is so happy that Frank decides to ask everyone to write him a letter, which they do. When George opens the post the next day, all the letters are for him! The Koalas and the others are pleased to see how even a little thing can make a friend happy.