Original envelope w/"1934 - A Century Of Progress - Chicago" return address had additional "Visit Libby's Exhibit In The Foods Building" text. Envelope contains 15x19.5" paper map issued by Libby at the 1934 Chicago World's Fair. Nice overhead map detailed w/small illustrations and text describing areas which include "Great Unknown Land Of Dragons & Fire Spitting Monsters, Pygmy Village, Land Of Red Beards, Land Of Fire Pits," etc. as well as three color-coded journey routes w/start/end points. Nice character illustrations appear at corners w/Og and Nada at lower left, others feature Big Tooth, Ru and Red Beard. Folded as issued. Map has lt. wear as folded but remains bright and clean. NM and as nice as these come. Rare. Envelope has even lt. aging and lt. handling wear. VF overall. Envelope has paper sticker reading "Premium Library" indicating that this was once in the archives of General Mills.