Donate to support Middlesex Conservation District's work to educate and support agriculture and conservation in Middlesex Country, Massachusetts. Please enter the amount you wish to donate.By donating to the Land Trust, you will automatically become a member. Donate. Support Middlesex Conservation District's work with a donation. If you are interested in donating your time, visit our volunteer page. The conservation easement can either be sold or donated, resulting in a variety of tax benefits for the landowner. You can also visit our website. Middlesex County has preserved more than 120 acres in the environmentally sensitive Peter J. Barnes III Wildlife Preserve, protecting wetlands and wildlife. Braddock Park is only the latest in a series of battles over diversions of important park and recreational land. Some earlier examples include:.