importing USGS landcover maps

[Chris C Rewerts]

Just when I have gotten used the process of importing USGS DLG files
to GRASS vector, I have a monkey wrench tossed into my machinery...
now I have some other format to deal with (for what I am guessing is land
cover data; a raster representation perhaps.)

So I call upon the collective expertise of this mailing list again
to help me out of the fog. Hopefully to someone this is a recognizable
situation. Below is the top 10 lines of one of the files. Can you tell
what it is? If so, how do I import to GRASS?

hat in hand, 

Chris Rewerts (rewerts at ecn.purdue.edu)

"Speak up - what are you?"
"I'm ignorant"             - The Little Prince

------------------ top ten lines of mystery data file ---------------------
       575    942100       860    0  200    6   77   16    1   7874016      1978
    1    1  860  575    0  556   19    1  440   13  860   20  854  575  427  397
    400000    900000    410000    900000    410000    890000    410000    880000
    400000    880000    400000    890000    243900   4542900     86073
PEORIA, IL 1:250,000 QUAD LU PB CN HU FO SO
 16  247800 4542800          0     17095   7130005  1709510020000001002000000100
 16  248000 4542800          0     17095   7130005  1709510020000001002000000100
 16  248200 4542800          0     17095   7130005  1709510020000001002000000100
 16  248400 4542800          0     17095   7130005  1709510020000001002000000100
 16  248600 4542800          0     17095   7130005  1709510020000001002000000100