The USGS has now completed image maps of five states--Florida, 
Georgia, and New Jersey (McEwen, R.B. and Schoonmaker, J.W., Jr., 
1975) in "false color"; Arizona in black and white; and Nevada in 
"false true color" (a computed rendition which shows features in 
simulated "true" color, for example trees are green). Additionally, 
0 experimental maps have been made on a 1:250,000-scale quadrangle 
format and in an image format (a format in which the geographic area 
0 of coverage is determined by the orbit of the satellite and not by 
geographics.) The scales of these products range from 1:500,000 to 
0 1:250,000. All meet, or nearly meet, National Map Accuracy Standards 
with respect to a superimposed UTM grid. A 1:1,000,000-scale map of 
0 a part of Antarctica in IMW format has also been completed 
(MacDonald, 1976 a and b). 
Many other nations in the world are using Landsat data for 
cartographic purposes. South Africa, for example, is now in the 
process of completely mapping the country with these data. J.D. 
Leatherdale of Hunting Surveys Ltd. (written communication, 1975) 
1e reports, "We have recently completed a production task involving 
H mapping a large part of the Sudan at 1:250,000 scale from Landsat 
th supplemented by existing mapping, which has been entirely successful, 
and now regard mapping from Landsat as another proven survey technique 
to be used in conjunction with other survey techniques as requirements 
dictate." As of September 1974, the British Antarctic Survey has pub- 
m lished seven 1:250,000-scale image maps, each with a companion plani- 
metric map of Antarctica at a fraction of the cost of producing 
planimetric maps from conventional aerial photography. 
International acceptance of Landsat data by scientists in mineral 
ly resource industries is exemplified by Layton and Associates Pty. Ltd., 
nd of Perth, Australia, who, as commercial consultants in geology and 
mining engineering, offer for sale mosaics, maps, and reports based on 
their studies of Landsat data. They include: : 
1) Photomosaic of Australia (1:2,500,000) 
2) Photomosaic of Borneo Island (1:1,000,000) 
3) Selected areas and themes throughout the continent. 
Both Bolivia and Venezuela have revised their small-scale national 
planimetric maps on the basis of new information provided by Landsat 
images. Argentina, Brazil, Venezuela, Bolivia, Paraguay, and Mexico are 
also using photographs from the Skylab missions for mapping and other 
applications. 
à From the onset of the Landsat experiment it was evident that the 
data had value in charting the shallow seas. Only recently, however, 
have discrete experiments been undertaken to demonstrate this capability 
by operating the Landsat system at high gain settings and processing the 
data in an optimized manner (Polcyn, 1969) Features corresponding to