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The authors and other staff and companies associated with the books If You Give a Mouse a Cookie, Corduroy and The Rainbow Fish all receive "Special Thanks" credits. Corduroy is one of the book shown in the opening sequence for the show.
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Angela Santomero is credited as Angela C. Santomero and Jenna Marie Castle is credited as Jenna Castle.
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Mailtime Segment: When Steve sings the "Here's the Mail" song, Blue holds up signs for us to sing along. Mailbox gives Steve letters - A B and C! He then give Steve the actual mail letter and in it, two girls visit a library. There, they read Laura Joffe Numeroff's If You Give a Mouse a Cookie.
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Snail, who is hidden in three places in every episode, is very easy to find one time in this episode because she has a label. The other two times she appears, she is not labeled.
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This episode is the first of two available as a bonus on the DVD "Blue Takes You to School."