The back of book provides a message to parents encouraging the support of play and pretending:
This is one of a series of products developed in cooperation with Fred M. Rogers, creator of "Mister Rogers' Neighborhood," the award-winning public television program for children. Both the program and the materials based on it encourage children to be themselves, to imagine, to create, to cope with feelings and new ideas -- and through all these things, to learn and to grow.
These playtime props encourage creativity and imagination. When children try on these hats and possessions associated with the TV characters, they are also trying out the personalities of those characters. In pretending to be someone else, children often add to their understanding of themselves and others.For more on this book, visit the Neighborhood Archive.