User contributions
- 04:09, 16 August 2015 (diff | hist) . . (+1,188) . . 1976 USAMO Problems/Problem 5 (→Solution 3)
- 04:08, 16 August 2015 (diff | hist) . . (+1,217) . . 1991 AJHSME Problems/Problem 19 (→Solution)
- 01:56, 30 July 2015 (diff | hist) . . (+884) . . Resources for mathematics competitions (→Problem books)