When Atlantic Gulf & Pacific Dredging Company John McMullen left his estate to Cornell to establish scholarships for engineering students, Cornell's Trustees decided to invest those funds and eventually sold the dredging company. The resulting fund is Cornell's largest single scholarship endowment. Since 1925, the fund has provided substantial assistance to more than 3,700 engineering students. (Cornell has received a number of unusual non-cash (in-kind) gifts over the years, including: Ezra Cornell's farm, the Cornell Aeronautical Laboratory (see below), a copy of Lincoln's Gettysburg Address, a Peruvian mummy, and the Ostrander elm trees.)