Patentes:

1. USRE7136E. IMPROVEMENT IN WIRE FENCES. (Maio, 1876) Lucien B. Smith: https://patents.google.com/patent/USRE7136E

2. USRE6902E. IMPROVEMENT IN WIRE FENCES. (Fevereiro, 1876). Michael Kelly: https://patents.google.com/patent/USRE6902E

3. US138763A. Improvement in wire-fences. (Maio, 1873). Henry M. Rose: https://patents.google.com/patent/US138763A

4. US157124. Improvement in wire-fences. (Novembro 1874). Joseph F. Glidden: https://patents.google.com/patent/US157124A

Sites, artigos e livros:

1. Eleanor Cummins. The thorny history of barbed wire. Popular Science. 2021. https://www.popsci.com/barbed-wire-invention-history/

2. Ray, Emily and Wynell Schamel. "Glidden's Patent Application for Barbed Wire." Social Education 61, 1 (January 1997): 52-55. National Archives and Records Administration. https://www.archives.gov/education/lessons/barbed-wire

3. Eleanor Cummins. The thorny history of barbed wire. Popular Science. 2021. https://www.popsci.com/barbed-wire-invention-history/

4. Tim Harford. Como o arame farpado mudou a propriedade privada. BBC. 2017. https://www.bbc.com/portuguese/geral-40494428

5. Philbin Tom. The 100 Greatest Inventions Of All Time. Kensington Books. 2005. p.294.

6. Kansas Barbed Wire Museum. The Early Years: A Brief History of Barbed Wire. https://www.rushcounty.org/BarbedWireMuseum/BWhistory.htm

7. Devils Rope. Barbed Wire. https://99percentinvisible.org/episode/devils-rope/

8. Livia Gershon. How Barbed Wire Changed Farming Forever. JSTOR. Daily. 2017. https://daily.jstor.org/how-barbed-wire-changed-farming-forever/

9. Museums Victoria. Barbed Wire Sample - Glidden, Two Twisted Strand, Two Point, Illinois, 1874. https://collections.museumsvictoria.com.au/items/404363

10. John H. Lienhard. The Engines of Our Ingenuity. Barbed Wire. University of Houston. https://engines.egr.uh.edu/episode/816

Consultas realizadas na wikipedia, com muito bom senso é claro:

1. Barbed wire: https://en.wikipedia.org/wiki/Barbed_wire

2. Joseph Glidden: https://en.wikipedia.org/wiki/Joseph_Glidden

3. Bisão-americano: https://pt.wikipedia.org/wiki/Bis%C3%A3o-americano

4. Homestead Act: https://pt.wikipedia.org/wiki/Homestead_Act

• Entre tantas outras pesquisas que não lembrei de anotar aqui. Acredito que com estas referências, já consigo dar uma direcionada em quem tiver interesse de pesquisar sobre o tema.

• Algumas imagens (desenhos) são feitas com IA e estão identificadas na tela com a mensagem “representação artística”. 

• A maioria das imagens e vídeos estão em domínio público, são autorais de Invenções na História ou são cortesia de:

1. Library of Congress, Pexels, National Archives, Met Museum, Museums Victoria, Smithsonian Institution.

2. [Crédito: Library of Congress]. Crofutt, G. A. (ca. 1873) American Progress. , ca. 1873. [Photograph] Retrieved from the Library of Congress, https://www.loc.gov/item/97507547/

3. [Crédito: National Archives]. Industries of War - Barbed Wire - MANUFACTURING BARBED WIRE. Barbed wire machines. Bundles of wire also shown. Pittsburgh Steel Co., Monessen, Pennsylvania. National Archives. NAID: 31486005. Photographs and other Graphic Materials. https://catalog.archives.gov/id/31486005

4. [Crédito: Wilhelm Grantler/Pexels]. Foto de Wilhelm Grantler: https://www.pexels.com/pt-br/foto/agricultura-animais-bichos-gado-17054698/

5. [Crédito: Chanita Sykes/Pexels]. Photo by Chanita Sykes: https://www.pexels.com/photo/herd-of-sheep-on-green-grass-field-1094534/

6. [Crédito: Vladimír Sládek/Pexels]. Photo by Vladimír Sládek: https://www.pexels.com/photo/green-grass-field-with-wooden-fence-10165792/

7. [Crédito: John De Leon/Pexels]. Photo by John De Leon: https://www.pexels.com/photo/a-cow-on-a-grassy-field-10366407/

8. [Crédito: Met Museum]. "Trotting Cracks" at the Forge. Currier & Ives (American, active New York, 1857–1907). Bequest of Adele S. Colgate, 1962. Met Museum. Public Domain. https://www.metmuseum.org/art/collection/search/387979

9. [Crédito: Chris/Pexels]. Photo by Chris: https://www.pexels.com/photo/white-and-brown-cow-on-green-grass-9803103/

10. [Crédito: Steyn Viljoen/Pexels]. Photo by Steyn Viljoen: https://www.pexels.com/photo/animal-beside-fence-787646/

11. [Crédito: Museums Victoria]. Barbed Wire Sample - Glidden, Two Twisted Strand, Two Point, Illinois, 1874. Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International): https://collections.museumsvictoria.com.au/items/404363

12. [Crédito: Pixabay/Pexels]. Photo by Pixabay: https://www.pexels.com/photo/animals-cattle-cow-farm-207044/

13. [Crédito: Abdul Zreika/Pexels]. Photo by Abdul Zreika: https://www.pexels.com/photo/photo-of-brown-cows-on-grassfield-5580298/

14. [Crédito: Met Museum]. The Rocky Mountains, Lander's Peak. Artist: Albert Bierstadt. Credit Line: Rogers Fund, 1907. Met Museum. Public Domain. https://www.metmuseum.org/art/collection/search/10154

15. [Crédito: FUTURE KIIID/Pexels]. Photo by FUTURE KIIID: https://www.pexels.com/photo/buffalo-on-grass-field-3640870/

16. [Crédito: Tyrese Myrie/Pexels]. Photo by tyrese myrie: https://www.pexels.com/photo/herd-of-buffalo-raging-679869/

17. [Crédito: Mehmet Turgut Kirkgoz/Pexels]. Photo by Mehmet Turgut  Kirkgoz: https://www.pexels.com/photo/dog-and-man-horseback-riding-in-dusk-18193361/

18. [Crédito: Kelly/Pexels]. Photo by Kelly: https://www.pexels.com/photo/top-view-photo-of-herd-of-cows-in-grassland-4372168/

19. [Crédito: Josh Hild/Pexels]. Photo by Josh Hild: https://www.pexels.com/photo/barbed-wire-fence-in-field-16664510/

20. [Crédito: Brett Sayles/Pexels]. Photo by Brett Sayles: https://www.pexels.com/photo/herd-of-moose-on-grass-2555826/

21. [Crédito: RDNE Stock project/Pexels]. Photo by RDNE Stock project: https://www.pexels.com/photo/barbed-wire-fence-and-wooden-post-near-bushes-on-dirt-ground-7894871/

22. [Crédito: Brian Forsyth/Pexels]. Photo by Brian Forsyth: https://www.pexels.com/photo/a-calf-on-the-pasture-17244204/

23. [Crédito: Met Museum/Howard Gilman Foundation]. [President Abraham Lincoln, Major General John A. McClernand (right), and E. J. Allen (Allan Pinkerton, left), Chief of the Secret Service of the United States, at Secret Service Department, Headquarters Army of the Potomac, near Antietam, Maryland]. Artist: Alexander Gardner (American, Glasgow, Scotland 1821–1882 Washington, D.C.). Gilman Collection, Gift of The Howard Gilman Foundation, 2005. Met Museum. Public Domain. https://www.metmuseum.org/art/collection/search/286615

24. [Crédito: Balazs Simon/Pexels]. Photo by Balazs Simon: https://www.pexels.com/photo/prairie-with-rock-formations-in-usa-17182314/

25. [Crédito: Smithsonian Institution/National Portrait Gallery]. Joseph Farwell Glidden, 18 Jan 1813 - 9 Oct 1906. National Portrait Gallery. Smithsonian Institution. Public Domain. https://www.si.edu/object/joseph-glidden:npg_NPG.98.88

Vídeos utilizados:

1. [Crédito: Justin Stretch/Pexels] Video by Justin Stretch: https://www.pexels.com/video/sheep-in-pasture-at-sunset-10885104/

2. [Crédito: Paolo Sandionigi/Pexels]. Video by Paolo Sandionigi: https://www.pexels.com/video/cows-with-bells-on-pasture-13096211/

3. [Crédito: Yakup  Seymen/Pexels]. Video by Yakup  Seymen: https://www.pexels.com/video/video-of-cows-eating-grass-5022437/

4. [Crédito: Tima Miroshnichenko/Pexels]. Video by Tima Miroshnichenko: https://www.pexels.com/video/blacksmithing-forge-5846589/

5. [Crédito: JBS - Parceiros do Campo/Youtube] JBS - Parceiros do Campo/FAZENDA CAMPARINO CÁCERES MT: https://www.youtube.com/watch?v=6j1eU1VzE-w&t=35s

6. [Crédito: Alberta Guy/Pexels]. Video by Alberta Guy: https://www.pexels.com/video/view-of-a-mountain-range-5525675/

7. [Crédito: David C Murray/Pexels]. Video by David C Murray: https://www.pexels.com/video/cows-on-grassland-13396156/

8. [Crédito: Kelly/Pexels]. Video by Kelly : https://www.pexels.com/video/a-herd-of-cattle-secured-by-wired-fences-in-a-ranch-3151446/