First class Second class Round trip First class Second class Round trip First class Second class Round trip First class Second class Round trip First class Second class Round trip First class Second class Round trip First class Second class Round trip First class Second class Round trip First class Second class Round trip First class Second class Round trip First class Second class Round trip First class Second class Round trip First class Second class Round trip First class Second class Round trip 35 22 68 40 30 26 co :: 37 23 13 9 9 9 5 $8 5 5 3 5 5 5 7 3 16 16 13 16 13 10 22 19 125 Annual report of the Department of the Interior United States. Dept. of the Interior |