This nice envelope puts in evidence two stamps ($44 each) dedicated to Howdy Doody and The Red Skelton Show.
"The Howdy Doody Show was one of the first and easily the most popular children's television show in the 1950s and a reflection of the wonder, technical fascination, and business realities associated with early television..." and
"The Red Skelton Show was an American variety show that was a television staple for almost two decades, from the early 1950s through the early 1970s..."
Thank you so much, Jean-Claude!