Police vehicles through history.

New York mayor Fiorello LaGuardia (back seat, right) takes a spin
in a New York World's Fair police car, ca. 1939–40. NYPL.

Tokyo's Police Museum has just opened a "history of police vehicles" exhibition, but those not in Japan can view modes of transportation for law enforcement in other places:

• Baltimore City Police Motors Unit
• Police vehicles, Carbondale (IL) Police Department
• Massachusetts State Police horseback patrols, 1920s–1930s 
• Metropolitan policewomen on motorcycles, London, 1920
• Metropolitan Police car and motorcycle, London, ca. 1935
• Vehicles gallery, National Border Patrol Museum
• Ohio State Highway patrol vehicles
• Police car retrospective
• Restoration of a 1972 Plymouth Fury patrol car, Pennsylvania State Police
• Portland Police Mounted Patrol, Portland (OR) Police Museum 
• Historic fleet, San Diego Police Museum
• Vintage police cars, Seattle Metropolitan Police Museum 
• Patrol wagon-ambulance, Trenton (NJ) Police Museum, ca. 1910
• Police jeeps, US Air Force police, 1950s

French exhibition on a forensic pioneer.

Class studying the Bertillon identification method, ca. 1910–15
Library of Congress, Prints and Photographs Div.

At the Musée de Vire in Normandy, France, until November is the exhibition "Alphonse Bertillon et L'Identification de Personnes 1880-1914" (Alphonse Bertillon and the Identification of Persons 1880-1914). The accomplishments of Bertillon (1853-1914) pertaining to the investigation of crime include devising a physical description system, inventing the mug shot, and developing an approach to crime scene photography, but his role in the Dreyfus case marred his career. Some items from the exhibition can be viewed on the museum's blog. (Thanks to the International Crime Fiction Group based at Queen's University Belfast)

Don't mess with Louis.

The Forgotten Stories blog recalls Louis Hass, crime-fighting Philadelphia jeweler of 1919. (The Reading Eagle reveals he had another close call in 1924.)

Update. The Forgotten Stories blog has thanked the Bunburyist for providing additional information on Hass.

Rue Nicaise, 1800: The first modern police investigation?

On the Wonders and Marvels blog, Catherine Delors discusses the Rue Nicaise bombing of 1800 that attempted to end the life of Napoleon, stating that it is "considered the first modern police investigation." The case is the basis for Delors's new novel For the King.

About the image: Napoleon at Fontainebleu, ca. 1814. Library of Congress, Prints and Photographs Division