What is the meaning of "When I'd fall into one of them strange sleeps" in the following sentences (Source: PINK and SAY by Patricia Polacco),
My leg burned and was angry from the lead ball that was lodged in it just above my knee. I felt sleepy and everything would go black. Then I'd wake up again. I wanted to go back to our farm in Ohio and sometimes, When I'd fall into one of them strange sleeps, I'd be there with my Ma, tastin' baking powder biscuits fresh out of her wood stove.
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Does "When I'd fall into one of them strange sleep" mean "When I'd become one of them, and I'd have a strange dream(sleeps)" ?