George Coffin

American bridge player and writer, games writer, actuary and cryptanalyst

American bridge player, writer, and teacher

American football player

American business executive and bridge player

American bridge player, administrator, writer, and sponsor

American bridge player and club owner

American contract bridge player

American contract bridge player

American contract bridge player

American bridge player

American contract bridge player

Brydżysta amerykański, działacz sportowy

American contract bridge player

American contract bridge player

American contract bridge writer, teacher, and administrator

American bridge player

American bridge player and writer

American bridge player, writer, and teacher

American bridge player

American contract bridge player