On October 29, 1956 the international FAM-18 (Foreign Air Mail) route added service from
Philadelphia to Calcutta and from Boston to Ankara.
Coupled with existing FAM-14 routes, this allowed mail another route to travel completely
round-the-world by regularly scheduled air mail service of the US Post Office.
Outline of existing FAM-14 air routes with the new FAM-18 routing:
San Francisco CA - -FAM-14 - -
Los Angeles, CA
Portland, OR
Seattle, WA
Honolulu HI
Wake Island
Guam
Tokyo, Japan
Shanghai, China
Manila, Philippines
Hong Kong
Saigon, Viet Nam
Singapore
Bangkok, Thailand
Rangoon, Burma
= = = =!= = = = = = = = = = = = = = = = Calcutta, India = = = = = = = =
! Karachi, Pakistan
-!- - -!- - - - -!- - - - - - - - - - - Ankara, Turkey
! ! ! Istanbul, Turkey
! ! ! !- - - - - - Munich, Germany
! !-F18-260-!-F18-261-!-F18-263- - Philadelphia, PA
-!-F18-262- - - - - - - - - - - - - - - Boston, MA