The land grants are reported for a wider range of dates at the Solano County Genealogical Society page, but for my purposes of tracking all California pioneers, I only want to extract those that occurred through 1850.
Robert Semple to Caleb Ames 22 Jun 1850 C-137
Robert Semple to A G Abell 26 Feb 1850 C-467
Henry D Cooke to A G Abell 2 Feb 1850 C-402, C-405
Thomas Douglas to Alexander Gordon Abell 18 Jun 1849 H-310
Robert Semple to J Howard Ackerman 16 Dec 1847 A-14
Robert Semple to John Adair 19 Nov 1850 C-548