Wanted: RGB to PICT conversion utility

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Does anyone have a program to convert SGI color image files to the
standard Macintosh Color Quickdraw format (PICT 2)?  

I would like to be able to move color images from SGIs into Macintosh
drawing programs for annotation and recording on Mac high resolution
film recorders.  Seems like a task others might have encountered.  
Has anyone written a program to do deal with it (on either the SGI 
or the Mac)?

Many thanks in advance

David States