July 25, 1953, was a red-letter night in the history of Concord - the first time the ConcordElectric Co. illuminated bright electric lights that replaced the far dimmer gas lights on Main Street. The lights will be even brighter this Friday with the opening of Downtown Market Days. Today's mystery photo quiz: Where… 0

The one-story concrete-block structure at left was the Boston & Maine Railroad's passenger station that replaced the magnificent brick depot, built in 1887, which symbolized the railroad's domination of commerce, travel and political power in New Hampshire. But the B&M had fallen on hard times in the 1950s,… 0

The small building at left was extremely important to the Boston & Maine Railroad 50 years ago. What was it? The Concord Historical Society has the answer at concordhistoricalsociety.org. Or you can wait until next week's Insider. During the lion's share of the 20th century, the B&M's presence and influence… 0

This obelisk, now alongside Pleasant Street near Concord Hospital, commemorates the killing of Obadiah Peters, John Bean, John Lufkin, Samuel Bradley and Jonathan Bradley on Aug. 11, 1746, by Abenaki warriors. The deaths are honored as victims of an Indian massacre, but in fact they were something else. What was it? The… 0

The automobile bottleneck on Centre Street and Loudon Road wasn't the first traffic jam in Concord, as this photo of electric streetcars operated by the Concord Street Railway reveals. This picture, from the collection of antiquarian Earl Burroughs, shows the streetcars at the intersection of Main and Pleasant streets… 0

Ask an old-timer about the handsome architecture that Concord lost on the way to progress, and he or she is likely to bring up the old Boston & Maine railroad depot. Here’s a South End landmark that served thousands of Concord residents, a structure whose tale will be told in “Crosscurrents of Change,” the… 0

The Concord State Fair was a big celebration at the turn of the 20th century. Even President Theodore Roosevelt made an appearance in 1902. In 1900, several owners of the new-fangled automobile staged an exhibition race at the half-mile oval that previously was used for horse and harness racing. The fair was gone by… 0

The Parker School stood on a School Street lot that held a school building for most of the city's history. The New Hampshire Attorney General's Office now occupy the property. The "educator" clue last week referred to Louis (Duke) Rundlett, superintendent of Concord schools from 1885 to 1934, and Parker was used for… 0

This building is on a plot of ground that gave School Street its name. One might call it a duke’s castle after the man identified by “Crosscurrents of Change” as the most extraordinary educator of the 20th century. Name the building and name the educator. The answer will be published next week in the Insider.… 0

Last week, we showed you a photo of a farm in Concord. Did you guess correctly who it belonged to? The mystery multitasker in the Dec. 8 Insider is Dr. Robert O. Blood, a Republican who served two terms as governor of New Hampshire in 1941 and 1943, was born in 1887 and attended Dartmouth College. Blood also owned… 0