This death register is a bound book that consists of:
[Although this is called a "death" register, I tend to think of it more as a "funeral" (or "burial") register, because I believe that an entry was only made in this register when a priest from this parish conducted a funeral (burial) service for the deceased. For a deceased adult, such a service typically began at the place (often the home of the deceased or close relative; otherwise a funeral home) where the body was waked, continued with a procession to the church where a mid-morning funeral Mass was celebrated, and continued with an automobile procession to St. Casimir Lithuanian RC Cemetery where the burial service was conducted. Services for a deceased child could be more abbreviated.]
On website FamilySearch.org, this death register is identified as "Deaths 1906-1926 with index" under the heading "All Saints Parish (Chicago: S State)". Here is the summary of information about the images in this set:
[The actual death register book has register pages that go beyond register page 129 and those pages contain entries beyond 1925, but the images available online stop at register page 129.]
The index pages are valid only for entries through September 1915 (when Rev. F. B. Serafinas was the pastor). Death entries after that time are not listed in the index pages.
Typical Register Pages from All Saints RC Parish Death Register, 1906-1925 (with example entry)
(red rectangle added to highlight example entry)
Refer to All Saints RCC 1918-10-28 Death Record.