Based on look at California Death Index (CADI) believe additional info on following can be found there per below. I used search critera (SC) as indicated:

Vern D

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Joan Hay De Martini; SC- Surname DEMARTINI/Given name JOAN/Father Last Hay

Phillip J. De Martini; SC- Surname DEMARTINI/Given name PHILIP (single L)/Death Place SAN JOAQUIN

Phillip T. De Martini; SC same as for Phillip J. (above)

Mary E. De Martini; not found

Mrs. E. F. Mitchler; SC- Surname MITCHLER/Death Place SAN JOAQUIN for most likely; probably RUTH A because of Mother Maiden Hay. Husband probably Ernest F.

Lawrence H. De Martin; SC- Surname DEMARTINI/Mother Maiden Hay

John J. De Martini; SC same as for Lawrence H. (above)

Mrs. Edward E. Fay Jr.; not found

Linwood A. Leffler; SC- Surname LEFLER/Given name LINWOOD/Birth Place California

Thomas Edward Fay;not found

Mrs. Mary Williams; Surname WILLIAMS/Father Last HAY/Birth Place California