(official alumni website) http://lindblomalumni.readyhosting.com/
(over 3,500 alumni;multi-purpose) http://lindblom.ning.com/
(Lindblom alumni blog) http://www.lindblomalumni.org/
(on Twitter) http://twitter.com/lindblomeagles
(391 staff & alumni) http://groups.yahoo.com/group/Lindblom/
(alumni from 1950s) http://groups.yahoo.com/group/NiftyFifty/
(class of 1955) http://groups.yahoo.com/group/LHS1955/
(class of 1961 blog) http://lths61.blogspot.com/
(class of '67/'68) http://groups.yahoo.com/group/lindblomtech/
(class of 1976) http://groups.yahoo.com/group/lindblom_76/
(class of 1978) http://www.lindblomclassof78.com/calendar.php
(class of 1979) http://groups.yahoo.com/group/Lindblom_1979_Keep_In_Touch/
(class of 1983) http://lindblom.ning.com/group/classof1983
(class of 1984) http://groups.yahoo.com/group/lindblomreunion/?yguid=204833923
(class of 1989) http://groups.yahoo.com/group/lindblom89/
(class of 1990) http://groups.yahoo.com/group/LTHS1990/?yguid=204833923
(class of 1991) http://groups.yahoo.com/group/lindblom91/
(class of 1992) http://groups.yahoo.com/group/1992LTHSEagles/
(class of 1993) http://groups.yahoo.com/group/LindblomClassOf1993/
(class of 1996) http://groups.yahoo.com/group/lthsclassof1996/
(class of 1997) http://groups.yahoo.com/group/Lindblomclassof1997/
(class of 2000) http://groups.yahoo.com/group/LCPHS2000/?yguid=204833923
(class of 2004) http://groups.yahoo.com/group/lcphs2004/