History of Lisp, by J McCarthy:

http://www-formal.stanford.edu/jmc/history/lisp/lisp.html

The Evolution of Lisp (Steele and Gabriel):

http://www.dreamsongs.com/Files/HOPL2-Uncut.pdf

The Original 'Lambda Papers' by Guy Steele and Gerald Sussman

http://library.readscheme.org/page1.html

Many papers on the evolution, design, and implementation of Scheme:

http://library.readscheme.org/page8.html