Historia MathematicaVolume 3, Issue 3, August 1976, Pages 329-330CorrespondenceNew light on the origin of the four-color conjectureAuthor links open overlay panelJohn WilsonShow moreShareCitehttps://doi.org/10.1016/0315-0860(76)90106-3Get rights and contentUnder an Elsevier user licenseopen archivePrevious article in issueNext article in issueRecommended articlesCited by (0)Copyright © 1976 Published by Elsevier Inc.