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Between 40% and 50% of children didn’t live past 5 in the US during the 19th century. Popular authors like Charles Dickens documented the common but no less gutting grief of losing a child.

Little was known about the manuscript, which donated by Edward Ayer, a tycoon who made his fortune supplying railroad ties.

Recruited to the war effort thanks to their deft research skills and technological know-how, librarians used microforms to gather and share intelligence with Allied forces.