Eisenhower National Historic Site welcomes donations to assist in our efforts to preserve the site, make acquisitions for the museum collection, and support our education programs. Please make out checks to: Dept. of Interior - NPS. Mail to: Eisenhower National Historic Site, 1195 Baltimore Pike, Suite 100, Gettysburg, PA 17325. Please indicate on your check which of our efforts you would like your donation to support. Your support is greatly appreciated.