Don Knuth has been very generously sending these checks (now certificates of deposit at The Bank of San Serriffe as reward for my bug reports about his books. I was selected by Don to proof-read his books Selected Papers on Design of Algorithms and Selected Papers on Fun and Games (as part of a 4-member team).

A check from Don Knuth for $5.44 dated 27 Jan 2007
$5.44 dated 27 Jan 2007
A check from Don Knuth for $49.28 dated 29 Apr 2007
$49.28 dated 29 Apr 2007
A check from Don Knuth for $2.56 dated 22 Aug 2007
$2.56 dated 22 Aug 2007
A check from Don Knuth for $80.96 dated 10 Feb 2008
$80.96 dated 10 Feb 2008
A check from Don Knuth for $5.76 dated 25 May 2008
$5.76 dated 25 May 2008
A check from Don Knuth for 0x$50.A0 dated 29 Oct 2008
0x$50.A0 dated 29 Oct 2008
A check from Don Knuth for 0x$22.E0 dated 23 Dec 2008
0x$22.E0 dated 23 Dec 2008
A check from Don Knuth for 0x$4.00 dated 31 Jan 2009
0x$4.00 dated 31 Jan 2009
A check from Don Knuth for 0x$7.20 dated 27 Mar 2009
0x$7.20 dated 27 Mar 2009
A check from Don Knuth for 0x$6.40 dated 29 Apr 2009
0x$6.40 dated 29 Apr 2009
A check from Don Knuth for 0x$69.96 dated 30 Oct 2009
0x$69.96 dated 30 Oct 2009
A check from Don Knuth for 0x$5.80 dated 05 Jan 2010
0x$5.80 dated 05 Jan 2010
A check from Don Knuth for 0x$5.20 dated 29 Oct 2010
0x$5.20 dated 29 Oct 2010
A check from Don Knuth for 0x$8F.95 dated 01 Dec 2010
0x$8F.95 dated 01 Dec 2010
A check from Don Knuth for 0x$10.A0 dated 29 Apr 2011
0x$10.A0 dated 29 Apr 2011
A check from Don Knuth for 0x$C.40 dated 02 Jun 2011
0x$C.40 dated 02 Jun 2011
A check from Don Knuth for 0x$16.60 dated 04 Feb 2012
0x$16.60 dated 04 Feb 2012