Salutation from the book: "The War In The Air" by Maj Gene Gurney. 

"Best birthday greetings to my old friend Allie Allison, one of the
elite of the magnificent men of flying machines - with every good wish
for many returns!  Bob Reeve Anchorage - AK Dec 26-70".  On the opposite
flap is a sketch of a biplane flying over wind-swept mountains and the note via the home of Allison.
note "Viva the home of Allison!".