|The Universal World Reference Encyclopedia. Chicago: Consolidated Book Publishers, 1946.|
Below, from The Petroleum Handbook. Compiled by Members of the Staff of the Royal Dutch Shell Group. Third Edition. (London: The Shell Pretroleum Company Limited, 1948):
Lake Asphalt is still going strong. Click here to read the legends of the lake. They include the following:
Believe it or not, in 1928, a huge tree, estimated to be four thousand (4000) years old arose from the middle of the lake to a height of about ten (10) feet before slowly sinking again. A cross-section of the tree was severed for posterity.