Unfortunately, some of the Postscript in these files is unfriendly to
its neighbors, and "lpr *.ps" doesn't work (it tries to send all the
files concatenated together to the printer).

It seems to be necessary to send them one at a time.

If you have the xargs command on your system,

     "echo *.ps | xargs -t -n 1 lpr -Ppuffin"

(substitute your own printer for puffin) will do the trick.