1999.08.11 22:01 "TIFF to JPEG file - how?", by James McMullen

1999.08.12 15:13 "Re: TIFF to JPEG file - how?", by Kevin D. Quitt

I think you can persuade libtiff to give you back the physical contents of a strip without passing it through any decompressor,

T IFFReadRawStrip