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historicalmarkerproject/markers/HM23Y0_feeding-times-at-the-zoo_Washington-DC.html
Since the early days, the Zoo has prepared special foods for our animals. But just as nutrition guidelines for people have changed over the years, so too has our knowledge of animals' needs. Today, a team of nutritionists, veterinarians and keeper…
historicalmarkerproject/markers/HM23XZ_house-remodeling_Washington-DC.html
Animal enclosures have changed over time, evolving from mere "housing" to more natural and enriching environments. The Zoo's 2013 renovation of the 1937 Elephant House to an Elephant Community Center makes room for indoor socializing and playing f…
historicalmarkerproject/markers/HM23XY_smithsonian-conservation-biology-institute_Washington-DC.html
The Smithsonian Conservation Biology Institute (SCBI), previously established as the Conservation and Research Center in 1973, is a research and training leader in veterinary medicine, reproductive physiology and conservation biology.
Once beli…
historicalmarkerproject/markers/HM23WG_soapstone-valley_Washington-DC.html
Forest Hills Neighborhood
Art on Call
Soapstone Valley
Here the Nacotchtank Indians quarried soapstone and carved vessels. Archaeologist William Henry Holmes studied prehistoric workshops in this valley and other parts of the Rock Creek W…
historicalmarkerproject/markers/HM23WF_first-atomic-clock-1948_Washington-DC.html
IEEE Milestone
First Atomic Clock, 1948
The first atomic clock, developed near this site by Harold Lyons at the National Bureau of Standards, revolutionized timekeeping by using transitions of the ammonia molecule as its source of frequency.…
historicalmarkerproject/markers/HM23WE_11-bungalow_Washington-DC.html
Text on image:
M. Belcher
2937 Macomb Street
11. Bungalow
In the early 20th century, small apartment buildings and houses were constructed on Macomb, Ordway, Porter, Quebec, and Rodman Streets. Another popular style on these streets was the …
historicalmarkerproject/markers/HM23QI_firehouse_Washington-DC.html
The Tenleytown Firehouse (pictured here) dates to 1903. Its location on Wisconsin Avenue near Tenley Circle provides access and coverage to the greater Tenleytown area. Prior to the introduction of motor driven fire vehicles in the 1920s, the or…
historicalmarkerproject/markers/HM23PI_a-hollywood-legend-at-the-zoo_Washington-DC.html
This life-sized model of a triceratops may not give autographs but he was the star of a 1968 hit. Uncle Beazley—for that's who he is—"starred" in the movie The Enormous Egg, a film based upon the 1956 children's book of the same name.
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historicalmarkerproject/markers/HM1VJ2_orchards-fields-gardens-pastures-historical_Washington-DC.html
Even in the mill's heyday, the Peirce family ran a diversified farm. They grew vegetables, tended bees, raised livestock for meat and dairy and cultivated fields of wheat, corn, rye, and oats. On this hillside they maintained a substantial orchard…
historicalmarkerproject/markers/HM1VIS_pierce-plantation-historical_Washington-DC.html
Pierce Plantation1820-1840Cultivated fields and orchards spread out on the more than 1,200-acre tract above the creek. The spring house, family home, distillery, and flour mill remains as evidence of this large working estate along Rock Creek. In …