Secrets Behind Rome’s Self-Healing Concrete Leads Scientist to Launch Roman-Style Concrete Business
https://www.goodnewsnetwork.org/secrets-behind-romes-self-healing-concrete-leads-scientist-to-launch-roman-style-concrete-business/
#goodnews #inspiring #science #engineering #archaeology #history #construction #materials #buildings #Rome
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Theodor Horydczak
@TheodorHorydczak@mastodon.ozioso.online
The Theodor Horydczak Collection (about 14,350 photographs online) documents the architecture and social life of the Washington metropolitan area in the 1920s, 1930s, and 1940s, including exteriors and interiors of commercial, residential, and government buildings, as well as street scenes and views of neighborhoods. A number of Washington events and activities, such as the 1932 Bonus Army encampment, the 1933 World Series, and World War II. Not affiliated with LoC
mastodon.ozioso.online
Theodor Horydczak
@TheodorHorydczak@mastodon.ozioso.online
The Theodor Horydczak Collection (about 14,350 photographs online) documents the architecture and social life of the Washington metropolitan area in the 1920s, 1930s, and 1940s, including exteriors and interiors of commercial, residential, and government buildings, as well as street scenes and views of neighborhoods. A number of Washington events and activities, such as the 1932 Bonus Army encampment, the 1933 World Series, and World War II. Not affiliated with LoC
mastodon.ozioso.online
@TheodorHorydczak@mastodon.ozioso.online
·
Jan 31, 2026
National Gallery of Art. Construction of ventilators, Mellon Gallery of Art III ca. 1920-ca. 1950.
Horydczak, Theodor, approximately 1890-1971
1 negative : safety ; 8 x 10 in.
#MellonGallery #Horydczak #Theodor #MellonGalleryIII #Construction #DistrictofColumbia #Galleries&museums #UnitedStates #Ventilation #Washington(DC) #photography
https://www.loc.gov/item/2019678800/
View on mastodon.ozioso.online
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Theodor Horydczak
@TheodorHorydczak@mastodon.ozioso.online
The Theodor Horydczak Collection (about 14,350 photographs online) documents the architecture and social life of the Washington metropolitan area in the 1920s, 1930s, and 1940s, including exteriors and interiors of commercial, residential, and government buildings, as well as street scenes and views of neighborhoods. A number of Washington events and activities, such as the 1932 Bonus Army encampment, the 1933 World Series, and World War II. Not affiliated with LoC
mastodon.ozioso.online
Theodor Horydczak
@TheodorHorydczak@mastodon.ozioso.online
The Theodor Horydczak Collection (about 14,350 photographs online) documents the architecture and social life of the Washington metropolitan area in the 1920s, 1930s, and 1940s, including exteriors and interiors of commercial, residential, and government buildings, as well as street scenes and views of neighborhoods. A number of Washington events and activities, such as the 1932 Bonus Army encampment, the 1933 World Series, and World War II. Not affiliated with LoC
mastodon.ozioso.online
@TheodorHorydczak@mastodon.ozioso.online
·
Jan 31, 2026
National Gallery of Art. Construction of ventilators, Mellon Gallery of Art II ca. 1920-ca. 1950.
Horydczak, Theodor, approximately 1890-1971
1 negative : safety ; 8 x 10 in.
#MellonGallery #Horydczak #Theodor #Construction #DistrictofColumbia #Galleries&museums #UnitedStates #Ventilation #Washington(DC) #photography
https://www.loc.gov/item/2019678799/
View on mastodon.ozioso.online
0
0
3
Theodor Horydczak
@TheodorHorydczak@mastodon.ozioso.online
The Theodor Horydczak Collection (about 14,350 photographs online) documents the architecture and social life of the Washington metropolitan area in the 1920s, 1930s, and 1940s, including exteriors and interiors of commercial, residential, and government buildings, as well as street scenes and views of neighborhoods. A number of Washington events and activities, such as the 1932 Bonus Army encampment, the 1933 World Series, and World War II. Not affiliated with LoC
mastodon.ozioso.online
Theodor Horydczak
@TheodorHorydczak@mastodon.ozioso.online
The Theodor Horydczak Collection (about 14,350 photographs online) documents the architecture and social life of the Washington metropolitan area in the 1920s, 1930s, and 1940s, including exteriors and interiors of commercial, residential, and government buildings, as well as street scenes and views of neighborhoods. A number of Washington events and activities, such as the 1932 Bonus Army encampment, the 1933 World Series, and World War II. Not affiliated with LoC
mastodon.ozioso.online
@TheodorHorydczak@mastodon.ozioso.online
·
Jan 31, 2026
National Gallery of Art. Construction of ventilators, Mellon Gallery of Art I ca. 1920-ca. 1950.
Horydczak, Theodor, approximately 1890-1971
1 negative : safety ; 8 x 10 in.
#MellonGallery #Horydczak #Theodor #Construction #DistrictofColumbia #Galleries&museums #UnitedStates #Ventilation #Washington(DC) #photography
https://www.loc.gov/item/2019678798/
View on mastodon.ozioso.online
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