Therapeutic Riding in Maryland - where to donate?

I’ve got some used tack I’d like to donate to a therapeutic riding center - we’re in Frederick, MD and would like to donate to somewhere fairly local. Does anyone have recommendations of where to donate? We have lots of clean saddle pads, girths, some cotton sheets, splint boots, boot pulls, tack cleaning hooks… and some other assorted things… Any suggestions would be appreciated!

There’s a 4H therapeutic riding program in Frederick. Here’s their website: http://www.fc4htrp.org/

also TRRC in glenwood

http://www.trrcmd.org/therapeutic/Welcome.html