X's have been mailed, for total cost $23 X Agashe X Baker X Coleman X Cannon Cremona Csirik Frey X Goins Grandma X Granville X Greenberg X Katz X Klenke Kohel Lenstra X Lorenzini X Mak X Mazur X McCullum Merel MomDad Mueller X O'Neil X Ono X Poonen X Ribet X Rodrigez-Vellegas X Rubin Sarnak X Savitt X Schaefer Stoll X Tate X Taylor X Tish X Voloch X Wetherell