Policy prisoners Caption: "Policy prisoners--Booked at the Poplar St. Station following today's big policy raid were, left to right, Sigismondo Baldassarre, Clarence Brown, James Carroll, Modesto Suarez, Matty Dahlan, Mrs. Lillian Baylun, and Coning Baker."

Police crime laboratory Inscription: "Workmen carting photo equipment of police dept. crime detection laboratory \[from moving van] into its new home in the 84th precinct headquarters, 72 Poplar St."

Gunpowder patterns Caption: "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."

Modern instruments Caption: "Modern instruments such as infra-red spectrometer being checked by Sgt. Kevin O'Brien, make city's police laboratory outstanding in international police circles. This spectrometer identifies material without damaging it. Lab equipment is valued at $5,000,000."

Handwriting expert Caption: "Handwriting expert Sgt. Joseph McNally examines examples of the same signature for evidence in a forgery case. Documents section is outstanding in the country for its work in typewriter identification."

Fingerprints develop like film Caption: "Fingerprints develop like film with the silver nitrate and carbon-arc light process used here by Detective William Larkin. ..."

Suspect package Caption: "Suspect package is X-rayed by Detective William Schmitt to see if it contains bomb. X-ray photos make bomb disarming easier. X-rays also are useful for exposing loaded dice seized in gambling raids."

\[Crime detection laboratory] View of unidentified man working with test tube in Brooklyn crime detection laboratory.

Spectrographic Source Unit Caption: "Spectrographic Source Unit, operated by Dr. Manning, chief physicist, and Lt. Howard Finney, right, laboratory director, is invaluable in identifying poisons, metals, soils. Instrument can connect paint on hit-run victim to guilty automobile." Police laboratory location is 72 Poplar Street.

Brooklyn 1, Community Center, 68 Poplar St; Jerry Spearman, Photographer