On Lisp is out of print and hard to find. Do you have a used copy you'd be willing to sell? These people would like to buy it:
    zbir @ urbanape.com
    slytobias @ toad.net
    dnm @ pobox.com
    ben @ galbraiths.org
    joseph_gargery @ operamail.com
    imabuddha @ yahoo.com
    ehalmus @ yahoo.com
    jodybell @ cableone.net
    trimtab @ mac.com
    wuhuagua @ yahoo.com
    leed @ cs.ucdavis.edu
    berkana @ mac.com
    oemgr @ yahoo.com
    rc @ pgdn.org
    stevenp @ seas.upenn.edu
    dan_conroy @ alum.ups.edu
    s.e.hatlevik @ hfstud.uio.no
    ecashin @ terry.uga.edu
    cmena @ pobox.com
    lbjinna @ qwest.net
    koppula @ CS.Stanford.EDU
    leiv.hellebo @ hfstud.uio.no
    bwilber @ descartes.com
    dennisdjensen @ hotmail.com
    boehnkerk @ msx.umsl.edu
    dvdavins @ pobox.com
If you put a copy up for sale on Ebay, let these folks know. (Remove the spaces in the addresses before sending mail.) To have your name added to or removed from this list, send mail to pg @ paulgraham.com.