Mathematica 4.1
/usr/local/mathematica/SystemFiles/Fonts/Type1/Math*.pfa
There is a new version of these fonts available at the following URL.
Mathematica 4.2
http://support.wolfram.com/mathematica/systems/unix/general/MathT1_42.tar.gz
Mathematica 4.1
http://support.wolfram.com/mathematica/systems/unix/general/MathT1.tar.Z
Follow these commands to download the Math fonts to your current printer.
Mathematica 4.2
gzip -d ./MathT1_42.tar.gz
tar xvf ./MathT1_42.tar
cd ./Type1
lpr ./*.pfa
Mathematica 4.1
uncompress ./MathT1.tar.Z
tar xvf ./MathT1.tar
cd ./MathT1
lpr ./*.pfa
These fonts will be saved in your printer's memory until the printer is restarted. Once you have downloaded the fonts to a PostScript printer, the fonts will work for any print job regardless of the type of computer sending it.
If you are printing to an Apple Laserwriter that has an Apple-formatted hard disk for storing fonts, you might find it easier to download the Macintosh version of the fonts.
http://support.wolfram.com/mathematica/systems/macintosh/general/manualfontdownload.html
If you are having a problem with the fonts not being rendered in graphics and you don't have the memory in your PostScript printer to download fonts, the following page addresses how to solve this problem without downloading the fonts to the printer.
http://support.wolfram.com/mathematica/interface/print/psproblems.html
If you are not using any special typesetting features, you might want to see the page on generating graphics that do not require the fonts.
http://support.wolfram.com/mathematica/graphics/textfonts/nomathfonts.html
Questions or comments? Send email to support@wolfram.com.