One thing you can do is post a Mission about this to AgentAnything.com, e.g. "Pick up and donate my box spring."
You can decide how much you want to pay for this (e.g. $10), and then a college student (Agent) will find a place to donate it to, come pick it up, and deliver it there for you.
If the mattress and box spring are in good, clean condition--and not uncomfortable due to age and sagging--most refugee and other social agencies will accept them.
The address of the Richfield Springs Historic Association is: Po Box 374, Richfield Springs, NY 13439-0374
The address of the Friends Of The Historic Colorado Springs City Auditorium Inc is: Po Box 1696, Colorado Springs, CO 80901
The address of the Heritage Hunters Of Saratoga County New York is: Po Box 270, Saratoga Springs, NY 12866-0270
The address of the Ye Olde Sulphur Spa Historical Society is: Po Box 161, York Springs, PA 17372
The address of the Big Springs Historical Soc is: Po Box 41, Caledonia, NY 14423-0041
The address of the Clifton Springs Historical is: Po Box 112, Clifton Spgs, NY 14432-0112
Yes, box springs are recommended with a traditional mattress. The box springs are constructed to support the mattress and to lengthen its life.
Box - 2006 was released on: USA: 14 April 2006 (New York City, New York)
The address of the Frontenac Historical Society And Museum is: Po Box 338, Union Springs, NY 13160-0338
The address of the Historical Society Of Saratoga Springs is: Po Box 216, Saratoga Spgs, NY 12866-0216
Jack in a Box - 2009 was released on: USA: 7 July 2009 (New York City, New York)