Here is an extract of the cover-letter.ps. You'll note that the font is ArialMT with a font type of 1 (won't work on windows machines). I don't have a MAC, but I'll ask a friend that does. I note the cover-letter.ps as it appears to be used as well as the cover.ps.
%!PS-Adobe-2.0 EPSF-1.2
%%Title: cover-letter
%%Creator: FreeHand MX 11.0.2
%%CreationDate: 7/17/07 8:18 PM
%%BoundingBox: 0 0 596 761
%%FHPathName:Macintosh HD:Users:david
rojects:Avant Fax:cover pages:default:cover-letter
%ALDOriginalFile:Macintosh HD:Users:david
rojects:Avant Fax:cover pages:default:cover-letter
%ALDBoundingBox: 0 -34 595 807
%%FHPageNum:1
%%DocumentSuppliedResources: procset Altsys_header 4 0
%%ColorUsage: Color
%%DocumentProcessColors: Cyan Magenta Yellow Black
%%EndComments
%%BeginFont: ArialMT
11 dict begin
/FontName (ArialMT) def
/FontType 1 def
/PaintType 0 def
/FontMatrix [0.001 0 0 0.001 0 0] def
/Encoding 256 array 0 1 255 {1 index exch /.notdef put} for def