[5] In July 1850, Crocker attended the Liberty Party convention in Syracuse, New York, where he retold the story of helping the slaves.

[10][11] In 1863, Governor Leland Stanford appointed Crocker as an associate justice of the California Supreme Court, which position he held from May 21, 1863, to January 2, 1864.

[12] In 1863, elections were held for all seats on the Supreme Court due to an 1862 amendment to California constitution and 1863 enabling law, and Crocker chose to step down rather than seek re-election.

[13] Crocker was the Central Pacific's attorney during the building of the First transcontinental railroad, culminating in the ceremony for the driving of the golden spike at Promontory, Utah, on May 10, 1869.

With a net worth of a million dollars from railroad investments, Crocker and his family traveled throughout Europe and collected art.

On July 8, 1852, he remarried to Margaret Rhodes in New York in a ceremony performed by Henry Ward Beecher.