David's memorial is on a marker shared with his wife and son.
The following is from the booklet, Gypsum Hill Cemetery Historical Walk, published by the City of Salina, Parks & Recreation and the Salina Public Library.
David L. Phillips, younger brother of William A. Phillips, was one of the five-member Salina Town Company. Although his family erected a monument to his memory, his body does not rest here. His disappearance remains a mystery today. Phillips left Salina in June 1883 on a trip to Washington Territory via the southern route through California. While traveling by train through a desert region of Arizona, Phillips, who suffered from migrane headaches, became distraught and irrational, telling his fellow passengers that he had been robbed. At a railroad stop called Volcano Springs, the road master saw Phillips leap from the train without hat, shoes or coat and run into the sandy, isolated region where temperatures soared during daylight hours. Although the Phillips family spent time and money in attempts to find the missing man, neither his fate nor the reason for his bizzare behavior was ever discovered.
Carrie E. Phillips (1816 - 1902)
David Lawrie Phillips*
In Memory of
So He died there,
and the Lord
buried him in the
valley but no man
knoweth of his
Gypsum Hill Cemetery
Plot: (Monument only) Block 3, Lot 36, Space 8
Created by: sister7a
Record added: Jul 31, 2007
Find A Grave Memorial# 20712680