There are pajamas to go with There Was an Old Dragon Who Swallowed a Knight. Also, it has been released in a new format, making the story accessible on mobile phones. More below.
Purchase links below.
You can buy the pajamas and book separately here.
You can buy the pajamas/book set or pajamas only here.
These merchants sell the pajamas and book as a set. I believe it’s online only.
Saks Fifth Avenue
Moonlite Library now includes my book in a three story bundle of Dinos, Dragons & Pirates!