System Information
Jacobs-Vogel System Summary Form, ACBL Convention Card
Cohen-Cohler System Summary Form, ACBL Convention Card
Sontag-Weichsel System Summary Form, ACBL Convention Card
About the Players
George Jacobs
![]() |
Claude Vogel
![]() |
|
Billy Cohen
![]() |
Gary Cohler
![]() |
Alan Sontag
![]() |
Peter Weichsel
![]() |