John H. Conway, Richard K. Guy "The Book of Numbers" 1996, pp.59-62

Donald Knuth
"Mathematics and Computer Science: Coping with Finiteness" 1976

in: Campbell, Higgins
"Mathematics people problems results, vol.2" 1984,
p.210-211

Copyrights for the two texts (set in PNG large image format)
rest with the copyright owners:

— Springer-Verlag New York, Inc. for John H. Conway, Richard K. Guy
The Book of Numbers, 1996

— The AAAS (lecture 22-2-1976) for Donald Knuth's article,
published in Science 194 (17-12-1976),
reprint 1984 by Wadsworth, Inc.

This page is presented as research material on the topic of
Big numbers
for which Conway's chained arrows are an original inspiration.