Ancient papyrus was kept in rolls. Later, codices (codex) were adopted.
(Origin of the Bible handout by my small group leader, February 8, 2023. Summarized from Wikipedia. Page 1.)
Since Samuel, Kings, the Minor Prophets, Ezra-Nehemiah, and Chronicles are each reckoned as single books in the Hebrew Bible, this may indicate the capacity of an average Hebrew leather scroll at the period when the canonical books were first listed and counted.
(The Origin of the Bible: Newly Updated by F. F. Bruce, J. I. Packer, Philip W. Comfort, and Carl F. H. Henry, 2020. The Canon of the Old Testament by R. T. Beckwith. Pages 57.)
List
- Copper scroll found in the Dead Sea Scrolls
- Dead Sea Scrolls
- The Diary of Merer, circa 2560-2550 B.C., Wadi al-Jarf
- The Temple Scroll
- War Scroll