The New Adventures of Huck Finn #1 from Hanna-Barbera and Gold Key
Remember this on the Banana Splits?  It was my favorite segment on the show (barely beating out the Arabian Knights). 
It had live action characters put into an animated segment.  Wonder if they will ever release the Banana Splits on DVD? 

       

This is a scan of an old comic book. This item is not for sale. But you can find it on ebay.
Click below to go to ebay and search!