Time to Fly

Otto Nielsen was a Danish painter and watercolorist who worked as an illustrator for books, magazines and posters.

From 1954 to 1976 he also produced a series of beautiful travel posters and calendars for Scandinavian Airlines System,

a company founded in 1946 with the merge of four Scandinavian companies from Sweden, Norway and Denmark. 

Its first destination was New York, then Bangkok and Buenos Aires, and in 1954 
SAS became the first airline to operate a trans-polar route.