http://www.usmint.gov/mint_programs/50sq_program/states/index.cfm?state=DE

http://www.theus50.com/delaware/quarter.php

http://www.dqha.net/

http://www.usmintquarters.com/delaware.htm

http://www.coinfacts.com/quarter_dollars/50_states_quarters/delaware.htm

http://www.eddyseger.net/QuarterControversy.html

http://coinfacts.com/quarter_dollars/50_states_quarters/delaware_experimental.htm

http://www.equinenow.com/quarterhorsedelaware.htm

http://www.coinresource.com/guide/state_quarters/state_DW.htm

http://www.dqha.net/forms/queenapp.pdf