You can celebrate Pittsburgh’s (OK, and America’s) favorite neighbor’s birthday with the kids at the Children’s Museum of Pittsburgh for free from 10 a.m. to 5 p.m. Free copies of the book “Speedy Delivery” will go to the first 150 children in the door, and the author, Mr. McFeely himself, will be in the theater from 11 a.m. to 1 p.m. as everyone celebrates the life of Fred Rogers.