One of my hobbies is collecting tautonyms--a harmless and inexpensive activity. Unlike rock-collecting, tautonym-collecting is clean, requires very little exertion, and only a small amount of storage space. Unlike coin or stamp-collecting, tautonym-collecting does not deal in objects of value; I don't have a safe to keep my tautonyms secure, nor do i Have to pay anyone when i come across a tautonym.
Long, Samuel S.
"Tautonyms in Biology (Part 1),"
Word Ways: Vol. 29
, Article 7.
Available at: http://digitalcommons.butler.edu/wordways/vol29/iss3/7