SummaryCaption: "Gunpowder patterns on victim's clothing are photographed by Dr. James J. Manning with Grenz X-ray. Patterns show approximate distance at which guns have been fired, proving or disproving theories of suicide or murder. The [police] laboratory [located at 72 Poplar Street] was established in 1934."
Cite AsBrooklyn Daily Eagle photographs, Brooklyn Public Library, Center for Brooklyn History
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