Ghorashi, Hannah. “Tehran’s Mayor Replaces Ads on All 1,500 City Billboards with Famous Artworks.”
Leow, Jason. “Beijing Mystery: What’s Happening to the Billboards?”
Mahdawi, Awra. “Can cities kick ads? Inside the global movement to ban urban billboards.”
Plummer, Robert. “Brazil’s ad men face billboard ban.”
Queiroz Galvao, Vinícius. “Retirada de outdoors revela favela na avenida 23 de Maio.”
Rogers, SA. “Super Clean City: Sao Paulo Entirely Scrubbed of Outdoor Ads.”
“Visual pollution: Advertising firms fret over billboard bans.”
Wentz, Laurel. “Sao Paulo’s Ingenious Move for Return of Banned Billboards.”
Winterstein, Paulo. “Scrub Sao Paulo’s Graffiti? Not So Fast, London’s Tate Says.”
Henn, Jurgen. “The end of ‘Overheight when Flashing.’ ”
Henn, Jurgen. “Raising 11foot8.”
Henn, Jurgen. “Very hungry canopener bridge defeats fancy, new warning system.”
Klee, Miles. “Farewell to the Legendary Truck-Destroying Bridge that Captivated a Nation.”
Krueger, Sarah. “Durham’s ‘can opener bridge’ being raised.” WRAL-TV website, проверено 28 октября 2019.
“Section 2C.22 Low Clearance Signs.” In
“Benjamin Franklin, First Postmaster General.” U. S. Postal Service website, проверено 23 октября 2019.
Gallagher, Winifred.
“Mail Service and the Civil War.” The USPS website.
Mingle, Katie. “244: The Revolutionary Post.”
Ostroff, Hannah S. “In the Grand Canyon, the U. S. Postal Service still delivers mail by mule.”
Ritholtz, Barry. “Congress, Not Amazon, Messed Up the Post Office.”
Thomas, JD. “The Postal Act: A Free Press, Personal Privacy and National Growth.” The Accessible Archives website, February 20, 2011.
Brooks, David. “City inevitably must replace unique triangular manhole covers.”
Camerota, Remo. Drainspotting:
Gordenker, Alice. “Manhole covers.”
“Japanese manhole covers: how design became a tool to collect more city taxes.”
Ragalye, Rachel. “Art at Your Feet: Japan’s Beautiful Manhole Covers.”
Scales, Lauren. “London’s History in Manholes.”
“A short history of manhole covers.” Metro Rod website, December 7, 2017.
Sturdevant, Andy. “Minneapolis’ sense of itself revealed in artist-designed manhole covers.”
Williams, David B. “Seattle Map 3 = Manhole Covers.”
Wullur, Melissa. “The Story Behind Japanese Manhole Covers.”
Yasuka. “Contemporary Art: Japanese Manhole Covers.”
Ackroyd, Peter.
“Benson Bubblers.” City of Portland Water Bureau website, May 2013.
Davies, Philip.
Docevski, Bob. “The Great Stink: That time when London was overwhelmed with sewage stench.”
Gutman, Marta.
Mann, Emily. “Story of cities #14: London’s Great Stink heralds a wonder of the industrial world.”