Dear Ms. Baker,
Thank you for posting your request on History Hub!
We searched that National Archives Catalog and located an Alphabetical List of Enlisted Men, 1798-1941; Service Records of Enlisted Men, 1798-1900; and Muster Rolls, 1/1798- 12/1940 in the Records of the U.S. Marine Corps (Record Group 127) that may include military service information for Isaac Mulford Baker. Since he served on the USS Dale, we also searched and located Logbooks of U.S. Navy Ships, ca. 1801 - 1940 in the Records of the Bureau of Naval Personnel (Record Group 24) that includes logs of the USS Dale for 2 June 1846 to 25 August 1849. These records are not yet digitized and available in the Catalog. For access to and/or copies, please contact the National Archives at Washington, DC - Textual Reference (RDT1) via email at firstname.lastname@example.org.
In addition, we searched Ancestry and located all Marine Corps Muster Rolls results for Isaac Mulford Baker; listed on the Federal Census Mortality Schedule; and his grave site in Pleasant Grove, Minnesota. There may be a fee for using Ancestry. Instead, you may view these records online at one NARA's facilities for free via a NARA PC. For the nearest NARA location, please consult our web page at https://www.archives.gov/locations/. Also, some of the images from Ancestry are available for free on Family Search at https://www.familysearch.org/en/.
We hope this is helpful. Best of luck with your family research!
Thank you so much for this information! I really appreciate it.