. . . . . "Crawford Hallock Greenewalt" . . . "Margaretta Lammot Du Pont Greenewalt" . . . . . . . . . . . . . . . "1993" . . "Crawford Greenewalt" . . . . . "Crawford Greenewalt" . "1902" . "Crawford H. Greenewalt" . . . . . . . . "Crawford H. Greenwalt" . . . . . .