To use the records, you must request them at the desk (Burton). At first, the librarians had trouble locating the records. I had printed out a copy of the finding aid to take with me, which may have helped. Eventually the records were found.
The four record books were wrapped individually in brown paper which was secured with with soft cotton tying tape. The two smaller volumes cover 1904-1920 and 1920-1925. Knowing that Kate Pettis Kerr died in 1937, I did not look at or even unwrap these early volumes.
Two larger volumes cover overlapping timespans. I began my search in the slightly larger third volume, covering 1925-1944. I was pleasantly surprised to find the search very easy, as the book has alphabetic tabs and the handwriting was good. I quickly found the page with the record I wanted.
The column headings are as follows:
Name -- Kate E. Kerr is the second entry on this page.
Rate -- I'm not sure whether this is daily, weekly, or monthly, nor do I know how the rate was settled upon (financial status, accommodations, extent of medical assistance needed?). If you know how the rate was determined, please leave a comment. In any case, Kate was paying $35.00, five or ten dollars less than anyone else on this page.
Place of Birth -- The amount of information in this column varies. Kate was born in Minnesota. Some records name the town; one on this page even gives the resident's birthdate.
Last Residence -- On this page, it appears that Detroit area residents have their street address listed. Kate's record lists only the state, Indiana. (Her elder son, Milton E. Kerr, lived in Crown Point, IN.)
Date of Entrance -- Kate moved into the Arnold Home on 24 October 1936.
Age -- Kate was 72 (her birthday was about three weeks before she was admitted).
Signature Person Responsible -- In some cases, this includes not only the name of the person, but also their address and phone number. For Kate, it's just the signature of my grandfather, R. P. Kerr.
Remarks -- I can't speak for the whole book (my research time was limited so I didn't go through the book page by page), but on this page, this last column is used to note the end-date of a resident, and whether that person left or died. The date given for Kate is 20 May 1937. Because I already know she died June 11th, I suspect she may have been moved to a hospital on May 20th. Unlike the other records on this page, the notation Died appears to have been added later, as it appears below the date, not in line with it as in the other entries.
(How is it possible that I still don't have Kate Pettis Kerr's death certificate? Must get on that!)
For the benefit of Google search, the other Arnold Home residents listed on this page are Mathea Kolstad, Mary E. Kettlewell, Sarah Komray, Jessie Keller, Anna C. Kishline, Francina S. Kenneweg, Anna Kelmel, and Fred Kniffel. Fred is the only male listed on this page. I can't tell you for sure whether his record was entered in this volume by mistake, but I can tell you that I did take a quick look at the other volume (1928-1943) which also covered the time during which Kate lived at the Arnold Home, and the K pages I glanced at listed only men, so it's possible that these two volumes with overlapping years may be more-or-less divided by gender. Still, there was Fred with the ladies, so if you don't find your person in the one, look in the other!
Detroiturbex has a good history of the Arnold Home, which was located at 18520 West Seven Mile Road in Detroit from 1931 until it closed in 2004. In 2013, it was torn down.
Search "Arnold Home Detroit" at YouTube and you'll find several "ruin porn" videos.
The New York Times ran a story in 1912 about the founder of the Arnold Home, Rev. Arnold, and a robber he'd tried to help.
There's an Arnold Home thread in the Detroit YES! Forum.