*Germplasm Resources Information Network: "Palaquium"*Gutta-percha on the Transatlantic cable site*The Gutta Percha Company on the History of the Atlantic Cable site
==See also==*Natural rubber== References ==== External links ==*Germplasm Resources Information Network: "Palaquium"*Gutta-percha on the Transatlantic cable site*The Gutta Percha Company on the History of the Atlantic Cable site