Continuity mistake: When Doc is painting himself in the yard, the amount / position of grey marks on the painting differs. (00:22:50)
Continuity mistake: When Morris first gets to Alcatraz, he's wearing a jacket with one button buttoned. As he walks through the metal detector his jacket is suddenly unbuttoned. (00:05:20)
Answer: Those were the solitary confinement cells, with no light and no luxuries of any kind. So yes, they did not allow inmates on that block to have books.
This is inaccurate as a light in each cell was turned on at 6:30 every morning in solitary confinement at Alcatraz.