STSDAS -- the Space Telescope Science Data Analysis System consists of applications software, utility packages, and support software used to calibrate and analyse data from the Hubble Space Telescope. The stsdas directory here is a copy of major parts of the STSDAS distribution directory on the main STScI ftp archive. It includes all source and binary distribution files from the STScI archive as well as STSDAS package binaries compiled locally on the NOAO systems. ftp://ftp.stsci.edu/pub/software/stsdas