'The USGS Earth Resources Observation and Science (EROS) Center archive holds data collected by the Landsat suite of satellites. The Landsat Thematic Mapper (TM), a sensor carried on Landsats 4 and 5, acquired seven spectral bands of radiant energy from the earth\'s surface. The wavelength range for the TM sensor is from the visible through the mid-infrared and into the thermal-infrared portion of the electromagnetic spectrum. The scenes are approximately 170 km by 185 km at a resolution of 30 meters for the six reflective bands and 120 meters for the thermal band. Bands 1 through 5 and 7 are reflective wavelengths; band 6 is thermal data. The TM Film Only collection includes scenes that are no longer available on magnetic media and the only remaining source is on black-and-white film.'