cell ASCII --> LTPlus

I would like to get the TIFF files produced by the scanner
as efficiently as possible into LTPlus. Right now, and
following suggestions made by Ronald Wiemer, I first convert
to pnm format (using the Xv utilities). I can choose whether
I want raw or ascii data. I strip the header off the ascii
data, which leaves me with just the 0's and 1's. My question:
can any of the import options in LTPlus read this?

----\_\_\_--\_----\_------\_-------------------- P. Martijn van Leusen --------
     \_ \_ \_\_\_\_ \_ Dept of Pre- and Protohistoric Archaeology
      \_\_\_ \_ \_ \_ \_ University of Amsterdam, The Netherlands
       \_ \_ \_ \_\_ \_ martijn@scanner.frw.uva.nl
--------\_------\_----\_--\_--\_\_\_\_-----------------------------------------