Dear Ms. Laskowski,
Thank you for posting your request on History Hub!
Since statewide death records in Arkansas did not begin until 1914, we suggest that you search substitute record sources such as probate records, church records, and newspaper records may include information for William Barkoff’s death in Arkansas. The FamilySearch Research wiki for How to Find Arkansas Death Records and the Online Arkansas Death Indexes, Records & Obituaries site may be useful.
Since registration of death records was not legally required in Indiana until 1882, we suggest that you search Indiana Deaths and Burials, 1750-1993 and Pre-1882 Indiana Deaths as well as substitute record sources for any information about William Barkoff’s death in Indiana. The FamilySearch Research wiki for Indiana Vital Records and the Online Indiana Death Indexes, Records & Obituaries site may be useful.
As his death may have occurred elsewhere, you may wish to expand your search to the entire United States by searching online newspaper archives for mention of William Barkoff to narrow the location for further research. There may be a fee for using these services. Instead, please contact your local library. Many library systems subscribe to these sites, making them free for patrons.
Since Census records list a foreign birth for William Barkoff, we suggest that you review these Genealogy: Passenger Arrival List Research Tips and NARA’s page on Immigration Records for suggestions on how to locate his immigration information. There are numerous ways that individuals could enter the United States from Europe such as on a ship that arrived at various coastal ports or over land from Canada, etc. Ship passenger arrival lists were a requirement beginning in 1820, but that does not guarantee that person was recorded or that the list still exists. Many of the passenger lists have been digitized and are name-searchable online using Ancestry and FamilySearch, which also may be available at your local library
We hope this is helpful. Best of luck with your research!
Thank you, I've already searched most of these. I'll continue looking. A trip to Little Rock may be in my future.