EROS Data Center
"Landsat" refers to land
survey by satelites. On this piece of postal stationery images of San
Francisco, Washington, and New York (left to right) are shown in
"false color." The indicium displays the seven bands of data acquired
by the high altitude survey. The cachet shows the Landsat satelite
tracking the eastern United States on a north-to-south orbit.
The Earth Resources Observation Systems (EROS) Data
Center is located at Sioux Falls, South Dakota, and operates the
Landsat program for the U.S. Geological Survey, an agency of the
Department of the Interior.
Hubert H. Humphrey
Although his public
service was in and for the neighboring State of Minnesota, Senator
Humphrey was born in Wallace, South Dakota in 1911. He served in the
United States Senate from 1948 to 1964, 1970-1978. In 1965 he was
elected the 38th Vice President of the United States, and in 1968 he
was the unsuccessful Democrat candidate for President. Eleven other
Vice Presidents have appeared on stamps. He is the first Vice
President portrayed on a stamp who did not go on to become President
to be. He died in 1978.