AMVETS - programs@amvets.org (or alternatively https://docs.google.com/forms/d/e/1FAIpQLSdkyCafL__eneyeCLv5-JjrVd1t7QpGkOdrl3uExB-lvsU19g/viewform)
Appalachian Trail Conservancy - info@appalachiantrail.org
Friends of Treasure Island - https://www.friendsoftreasureisland.org/eagle-recognition-letters/ (they ask for a $10 donation)
Friends Committee on Scouting (Quakers) - https://quakerscouting.org/youth-programs/request-letter-of-congratulations/
Joint Diocese Catholic Committee on Scouting - https://www.jolietdiocesecatholicscouts.org/joliet-diocese-eagle-scout-letter
Kiwanis - https://www.kiwanis.org/who-we-are/contact-us/
National Association of Police Organizations - info@napo.org
The Knights of Pythias - supremelodge@pythias.org
The Nature Conservancy - member@tnc.org (only if Eagle Scout project is related to nature or conservation)
National Rifle Association (NRA) - https://explore.nra.org/programs/youth/request-an-eagle-scout-certificate/
US Archery - info@usarchery.org