A gigantic map of all the cool plaques in the world. A project of 99% Invisible.

Major Edward Edwin Howard Armstrong

MAJOR EDWIN HOWARD ARMSTRONG 1890-1954 "The Man Who Made Radio Sing"   YONKERS RESIDENT AND INVENTOR OF THE REGENERATIVE CIRCUIT, GREATLY STRENGTHENING RADIO SIGNALS AND MAKING THEM AUDIBLE TO THE...

MAJOR EDWIN HOWARD ARMSTRONG 1890-1954 "The Man Who Made Radio Sing"   YONKERS RESIDENT AND INVENTOR OF THE REGENERATIVE CIRCUIT, GREATLY STRENGTHENING RADIO SIGNALS AND MAKING THEM AUDIBLE TO THE...

  • yonkers
  • edwin armstrong
  • 1890
  • 1954
  • radio
  • 1912
  • 1917
  • 1933
  • 1937

The 40th Street Parklet

    Marine Park - Upland Environment

    City of New YorkParks and Recreation1999Submitted by @lampbane

    City of New YorkParks and Recreation1999Submitted by @lampbane

    • brooklyn
    • marine park
    • salt marsh
    • 1999

    Gerritsen Creek - Saltmarsh

    MARSH - UPLAND BORDERHIGH MARSHINTERTIDAL FLATGERRITSEN CREEKCity of New YorkParks & Recreation1999Submitted by @lampbane

    MARSH - UPLAND BORDERHIGH MARSHINTERTIDAL FLATGERRITSEN CREEKCity of New YorkParks & Recreation1999Submitted by @lampbane

    • brooklyn
    • marine park
    • salt marsh
    • 1999

    Who was stationed at Fort Randolph and how did they live?

    Major General Kirby Smith chose five artillery batterie to be stationed at the forts. They were known as the Siege Train Battalion and consisted of the 26th, 27th and 31st regiments, and the 8th...

    Major General Kirby Smith chose five artillery batterie to be stationed at the forts. They were known as the Siege Train Battalion and consisted of the 26th, 27th and 31st regiments, and the...

    • louisiana
    • civil war
    • fort randolph

    How was Fort Randolph built?

    There are no detailed descriptions or illustrations of Fort Randoiph being built. However, it is known from historic al reports that earthwork forts were roughly circular in shape and had outer...

    There are no detailed descriptions or illustrations of Fort Randoiph being built. However, it is known from historic al reports that earthwork forts were roughly circular in shape and had outer...

    • louisiana
    • civil war
    • fortification

    18th Century Cistern

    This well dates from the first third of the 18th century. It was located on property which belonged to the Phillipse family of Phillipse Manor. The well originally extended down to the water...

    This well dates from the first third of the 18th century. It was located on property which belonged to the Phillipse family of Phillipse Manor. The well originally extended down to the water...

    • new york
    • manhattan
    • downtown manor
    • well

    Desertion and the end of the War

    In March 1865, bad news reached the forts from other parts of the Confederacy. The worse news arrived on April 15; General Robert E Lee was forced to surrender to Brigadier General Ulysses S....

    In March 1865, bad news reached the forts from other parts of the Confederacy. The worse news arrived on April 15; General Robert E Lee was forced to surrender to Brigadier General Ulysses S....

    • louisiana
    • civil war
    • fortification

    Why was Fort Randolph Built? Was there a third fort, Fort Alexandria?

    Louisiana had suffered repeated invasions by the Union Army in 1863 and 1864. There were fears that a spring 1865 attack was going to be made. General Edmund Kirby Smith, commander of the...

    Louisiana had suffered repeated invasions by the Union Army in 1863 and 1864. There were fears that a spring 1865 attack was going to be made. General Edmund Kirby Smith, commander of the...

    • louisiana
    • civil war
    • forts
    • fortification

    The Cotton Exchange

    Built in 1923, by the well-known architect Donn Barber, this building was revolutionary in many ways. Instead of placing the trading floor at street level, Barber placed it at the top. He canopied...

    Built in 1923, by the well-known architect Donn Barber, this building was revolutionary in many ways. Instead of placing the trading floor at street level, Barber placed it at the top. He canopied...

    • new york
    • manhattan
    • downtown manhattan
    • cotton exchange
    • 1923
    • 1984

    Fossilized Tree Stumps, Newtown Creek

    Wattieza (division Pteridophyta, class Cladoxylopsida) These fossils are stumps of some of the oldest trees known to exist. They are 385 million-year-old fossils of trees that grew in the Gilboa...

    Wattieza (division Pteridophyta, class Cladoxylopsida) These fossils are stumps of some of the oldest trees known to exist. They are 385 million-year-old fossils of trees that grew in the Gilboa...

    • brooklyn
    • greenpoint
    • newtown creek
    • wattieza
    • gilboa

    The Rosie Lee Davis Memorial Garden

      Saint Denis Tomb

      Beneath this building, former site of the Church of Saint Francis, the first Catholic Church in Natchitoches, lie the remains of The Chevalier Louis Juchereau de Saint Denis.Born at Quebec...

      Beneath this building, former site of the Church of Saint Francis, the first Catholic Church in Natchitoches, lie the remains of The Chevalier Louis Juchereau de Saint Denis.Born at...

      • louisiana
      • colonial era
      • gravesite

      The Red River Campaign

       In April 1864, life along tranquil Cane River was brutally disrupted when the Civil War reached area residents. In an operation known as the Red River Campaign, Union naval and land forces...

       In April 1864, life along tranquil Cane River was brutally disrupted when the Civil War reached area residents. In an operation known as the Red River Campaign, Union naval and land forces...

      • louisiana
      • civil war

      Original Sunrise School

      In 1889, W. R. Melton donated a one-acre tract of land at this site "for the cause of Religion and Schools.” The school located here, which served the Sunrise community, was a one-room...

      In 1889, W. R. Melton donated a one-acre tract of land at this site "for the cause of Religion and Schools.” The school located here, which served the Sunrise community, was a one-room...

      • mississippi
      • education

      Bay Creek Baptist Church

      Established in 1896 by Rev. Joseph Lewis Bryant, a member of the Mississippi House of Representatives (1908-1912). Bryant also served as the cogregation's first pastor. The first sanctuary was...

      Established in 1896 by Rev. Joseph Lewis Bryant, a member of the Mississippi House of Representatives (1908-1912). Bryant also served as the cogregation's first pastor. The first sanctuary was...

      • mississippi
      • church
      • religion

      Bridging Communities

      1)The Huey P. Long Bridge (U.S.190), completed in 1940, allowed both rail and automobile traffic to cross the Mississippi River at Baton Rouge. Approximately 17,000 vehicles use the bridge daily....

      1)The Huey P. Long Bridge (U.S.190), completed in 1940, allowed both rail and automobile traffic to cross the Mississippi River at Baton Rouge. Approximately 17,000 vehicles use the bridge daily....

      • louisiana
      • port allen
      • baton rouge
      • rotary club
      • west baton r...

      Largest Passenger Sea Plane In U.S.

      Submitted by @oranv

      Submitted by @oranv

        Babson Reservoir

          Eureka Dye Company

          EUREKA DYE COMPANY 1915 COMMERCIAL BUILDING CONSTRUCTED FOR OWNERS CHARLES DOUGLAS MEYERS (1868-1926), MANAGER OF EU- REKA DYE WORKS; AND SISTER, CAROLINE KELLOCH MEYERS (1866-1956). IN 1922,...

          EUREKA DYE COMPANY 1915 COMMERCIAL BUILDING CONSTRUCTED FOR OWNERS CHARLES DOUGLAS MEYERS (1868-1926), MANAGER OF EU- REKA DYE WORKS; AND SISTER, CAROLINE KELLOCH MEYERS (1866-1956). IN 1922,...

          • topsy
          • elephant
          • large quantities
          • circus