American Ivy Society
- A non-profit organization dedicated to preserving the genus Hedera through education and promotion. Site offers contact information, species photos with descriptions, a classification system, care instructions, article collection, membership details, and
- http://www.ivy.org/

The SunDowners and Carrier Air Group Eleven Association
- History of VF 111 Sun Downers U.S. Naval fighter squadron August 23 1942 to February 16 1995.
- http://tradecorridor.com/sundowners/