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A copy of an article titled, "Some results on tree numbers" by Donald Cowan, Ralph G. Stanton and L.O. James. The article was published in the Proceedings of the Second Louisiana Conference on Combinatorics, Graph Theory and Computing, March 8-11, 1971, pages 317-330.

Two copies of an article titled, "Some results on path numbers" by Donald Cowan, Ralph G. Stanton, and L.O. James. One copy is a final draft and the other is an offprint. The article was published in the Proceedings of the First Louisiana Conference on Combinatorics, Graph Theory, and Computing, 1970, pages 112-135.

A copy of an article titled, "A problem in coding theory" by Donald Cowan, L.O. James and Ralph G. Stanton. The article was published in the Proceedings of the First Louisiana Conference on Combinatorics, Graph Theory and Computing, March 1970, pages 167-180.