Ms Gildea:  As I understand it, the property does, in fact, belong to the Dryers and they're free to use, no use, sell, not sell, develop, not develop or whatever within the applicable zoning regulations.  I'm quite sure the neighbors and many in the community would like to see it remain "just as it is."  Great, but it's a bit presumptuous to suggest the Dryers should donate the land.  If you wish to form a group and "crowdsource" enough money to purchase the land for addition to Hendricks' Park or a "natural reserve", by all means do so.  I'll bet the Dryers would be very happy to negotiate with you and avoid the hassle (make that the tremendous hassle) of developing the parcel. 

When you get that effort underway, let me know and I'll send you a few bucks.  regards, Gary Crum