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Icehouse Canyon
1978 printed 1978Idaho Springs
1957 printed 1959, 1962, 19691957 (without color) printed 19691974 printed 1976,
1987Idalia
1968 printed 1971Idalia SE
1969 printed 1972Idalia SW
1969 printed 1972Ignacio
1968 printed 19721968 (without color) printed 1972Iliff
1951 (proof) printed 19531951 printed 19531951 (without color)
printed 1953Independence Mountain
1955 printed 1956, 19731955 (without color) printed 1956Independence Pass
1960 printed 1965, 1968, 19751960 (without color) printed 19651979 printed 19911994
printed 1998Indian Head
1966 printed 1968, 19771966 (without color) printed 19682001 printed
2005Indian Hills
1957 printed 1958, 19601965 (proof) printed 19671965 printed 1967
1965 (without color) printed 19671971
printed 19731971 (without color) printed 19731980 printed 19801994
printed 1994Indian Point
1965 printed 19681965 (without color) printed 19681973 printed 1978Indian Valley
1966 (proof) printed 19691966 printed 1969 (dark), 1969 (light)1966 (without color)
printed 1969Indian Water Canyon
1962 printed 19651962 (without color) printed 1965Iola (now "Big Mesa")
1954 printed 1955, 19631954 (without color) printed 1955, 1963Iris
1962 printed 1964, 1973, 19801962 (without color) printed 1964Iris NW
1954 printed 1955, 19631954 (without color) printed 1955, 19631970 printed 19731970 (without color)
printed 19731979 printed 1986Irish Canyon
1966 (proof) printed 19691966 printed 19691966 (without color)
printed 19691973 printed 1978Iron Mountain
1980 printed 1981, 1982, 1985Iron Springs
1969 printed 19721973 printed 1984Ironton (proof "Hayden Mountain")
1955 printed 1957, 1960, 1971 (dark), 1971 (light)1955 (without color)
printed 19601972 printed 1990Island Mesa
1969 printed 19731969 (without color) printed 19731973 printed 1980Isolation Peak
1957 (proof) printed 19591958 printed 1960, 1967, 19731958 (without color) printed 1961,
19671973 printed 1974
(missing),
1984Italian Creek
1967 printed 1971, 19751967 (without color) printed 1971, 19751979 printed 1991
2001 printed 2004 |