Very Rare H.J. Heinz Famous Flights Map Cir 1936-1937

Very Rare H.J. Heinz Famous Flights Map Cir 1936-1937
This map was mailed out as a teachers aid. It was mailed in a tube (only 1 known to exist), along with a teachers guide (only 2 known to exsist). the map is believed to be 14 of 14 known to exsist in the world, also there are less than 12 known map owners in the world. I bought this map at an estate sale in 2013. I found it buried in a closet. The owner of the estate died at the age of 87 she lived in the house all her life. I have no further information about this map.