In 1884, Van Dyke moved to Los Angeles, and practiced in the firm of Wells, Van Dyke & Lee.[6] In 1888, he was elected a Los Angeles County Superior Court in Department Four, and in 1894 was reelected to a six-year term, serving until December 28, 1899.[7][8][9][10] In June 1889, his name was unsuccessfully put forward to fill a vacancy on the California Supreme Court.[11]
In November 1888, he ran for a seat as an associate justice of the California Supreme Court, and on January 4, 1899, he began a 12-year term after winning the election as a fusion candidate[12] of the Silver Republican,[13]Democratic,[14] and Populist parties.[15][16][2] He was elected to the remaining term of William Cary Van Fleet, who died in office, ending in 1910.[5][17]
Van Dyke died on December 25, 1905, age 82, in his home at Fourth and Van Dyke avenues in East Oakland, California, after a brief illness identified as pneumonia.[18] Funeral services were conducted at Mountain View Cemetery.[19] His seat on the court was filled by the appointment of M. C. Sloss.
^"National Republican Nominations". Marin Journal. Vol. 8, no. 26. California Digital Newspaper Collection. September 12, 1868. p. 2. Retrieved September 23, 2017.
^"Constitutional Convention". Sacramento Daily Union. Vol. 7, no. 189. California Digital Newspaper Collection. September 30, 1878. p. 2. Retrieved August 22, 2017.
^"Large Crowd at Santa Monica". Los Angeles Herald. Vol. 26, no. 133. California Digital Newspaper Collection. March 4, 1887. p. 2. Retrieved September 23, 2017.
^"To Hear a Case". Sacramento Daily Union. Vol. 91, no. 113. California Digital Newspaper Collection. June 9, 1896. p. 4. Retrieved July 3, 2017. Governor Budd has requested Hon. Walter Van Dyke, Superior Judge of Los Angeles County, to hear and determine the case
^"Superior Judge Appointed". Sacramento Daily Union. Vol. 96, no. 129. California Digital Newspaper Collection. December 29, 1898. p. 3. Retrieved September 23, 2017.
^"Judge Van Dyke Honored". San Francisco Call. Vol. 85, no. 28. California Digital Newspaper Collection. December 28, 1898. p. 3. Retrieved July 3, 2017. Judge Walter Van Dyke officially closed his career as Superior Judge to-day.
^"A New Candidate". Press Democrat. Vol. 276, no. 12. California Digital Newspaper Collection. June 12, 1889. p. 2. Retrieved July 3, 2017.
^"The State Ticket". Los Angeles Herald. Vol. 26, no. 16. California Digital Newspaper Collection. October 16, 1898. p. 21. Retrieved September 23, 2017.
^"A Silver Lunch". Los Angeles Herald. Vol. 26, no. 69. California Digital Newspaper Collection. December 8, 1898. p. 5. Retrieved September 23, 2017.
^"The Democratic Ticket". Marin County Tocsin. Vol. 20, no. 28. California Digital Newspaper Collection. November 5, 1898. p. 2. Retrieved September 23, 2017.
^"The Fusion Ticket". San Francisco Call. Vol. 84, no. 45. California Digital Newspaper Collection. July 15, 1898. p. 4. Retrieved September 23, 2017.
^"The Chosen Ones". Sacramento Daily Union. Vol. 96, no. 119. California Digital Newspaper Collection. December 18, 1898. p. 6. Retrieved September 23, 2017.
^"Supreme Court Officials". San Francisco Call. Vol. 85, no. 35. January 4, 1899. p. 7. Retrieved July 3, 2017. Judge Walter Van Dyke took his place on the bench early in the morning. He fills the place made vacant by Judge Van Fleet.
^"Pioneer is Laid to Rest". Los Angeles Herald. Vol. 33, no. 88. California Digital Newspaper Collection. Associated Press. December 28, 1905. p. 4. Retrieved September 23, 2017.
^"California Pioneers". Los Angeles Herald. Vol. 25, no. 281. California Digital Newspaper Collection. July 8, 1898. p. 2. Retrieved September 23, 2017.
^"New Southern District Court". Daily Alta California. Vol. 42, no. 13642. California Digital Newspaper Collection. January 6, 1887. p. 2. Retrieved September 23, 2017.
^"Jurist Makes a Simple Will". San Francisco Call. Vol. 99, no. 31. California Digital Newspaper Collection. December 31, 1905. p. 48. Retrieved September 23, 2017.