Rowland, H. A. (1883). "A plea for pure science". Proceedings of the American Association for the Advancement of Science. 32: 105–126 – via hathitrust.org. Also available from Wikisource
Rowland, H. A. (1883). "A plea for pure science". Proceedings of the American Association for the Advancement of Science. 32: 105–126 – via hathitrust.org. Also available from Wikisource