Lynn Conway's ACS archive information has been relocated to a new URL:

 Note: Lynn's ACS archive includes a number of key internal IBM-ACS confidential papers, including the tutorial paper on Dynamic Instruction Scheduling dated February 23, 1966. Included is information about Lynn's ACS-1 MPM Timing Simulator and the source code listings for a fully functional late-version of that simulator, design notes for the main processor module, and the overall design of the ACS-1 design process based on multi-level simulation. 
The front-matter pages describe the contents of the archive and discuss the context in which each of the archive's papers was written. Also included is Lynn's original letter to Dr. Mark Smotherman alerting him to the existence of her ACS archive. See also Dr. Smotherman's IBM-ACS pages for further background on the history and technical details of the IBM ACS-1.