Title: SF Plant Finder: 148 plants for 500 Corbett Avenue

URL: http://50.17.237.182/plantsf/

Description: The San Francisco Plant Finder is a resource for gardeners, designers, ecologists and anyone who is interested in greening neighborhoods, enhancing our urban ecology and surviving the drought. The Plant Finder recommends appropriate habitat-building plants for sidewalks, backyards and roofs that are adapted to San Francisco's unique environment and climate.

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Title: Is The Iron Alley Stairway Really Closed? | Hoodline

URL: http://hoodline.com/2016/12/is-the-iron-alley-stairway-really-closed/

Description: The 133 wooden steps (give or take a stair) connect Clayton Street and Corbett Avenue at the intersection of three San Francisco neighborhoods: Corbett Heights, Clarendon Heights and Upper Market.

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Title: SF Public Works: In The Works: June 2016

URL: http://joom.ag/BBRQ/

Description: SF Department of Public Works June 2016 magazine article, "The Center of Attention" (pages 32-35) describes how the surveyors found the geographic center of San Francisco by using a GPS mapping system fed by Russian and US satellites. On June 2, a bronze medallion was placed on the sidewalk to mark the center of "one of the greatest cities on Earth."

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Title: Twin Peaks Images - OpenSF History

URL: http://opensfhistory.org/moreNeighborhoodPhotos.php?n=Twin_Peaks

Description: OpenSFHistory features scanned images donated to Western Neighborhoods Project (WNP) by a San Francisco photographer and collector active from the 1960s though the early 2000s. The majority of photographs at OpenSFHistory were taken by commercial and amateur photographers, and the collection provide a comprehensive overview of San Francisco, its residents, and environs from the 1850s through the 1970s.

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Title: San Francisco Children and Nature Forum

URL: http://sfcan.org/

Description: SFCaN's site includes a poster for the San Francisco Children's Outdoor Bill of Rights

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Title: Twin Peaks Trails Improvement Project

URL: http://sfrecpark.org/project/twin-peaks-urban-trails-project/

Description: Information about the Twin Peaks Trails Improvement Project. The Twin Peaks Trail Restoration project will improve the main spine trail, repair existing trails and steps, eliminate social trails, provide erosion control measures, restore native plants and provide trail identification and wayfinding signage.

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Title: Sutro Tower | Bay Area's Essential Connection

URL: http://sutrotower.com/

Description: Official site of Sutro Tower, the Bay Area’s most visible icon. Antennas on the 977-foot-high steel tower safely deliver clear signals throughout the San Francisco Bay Area for television and radio stations; essential communication services for public safety, transportation and other agencies or private providers; and unique, non-stop transmission opportunities for emerging technologies.

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Title: Corbett Road - FoundSF

URL: http://www.foundsf.org/index.php?title=Corbett_Road

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Title: Corwin Community Garden and Seward Mini-Park - FoundSF

URL: http://www.foundsf.org/index.php?title=Corwin_Community_Garden_and_Seward_Mini-Park

Description: The story of the Seward Street Mini-Park, which has drawn children to its concrete slides since opening day on May 21, 1973. Fearing loss of crucial open space, residents and Eureka Valley neighbors began a campaign of petitions and letters to city, state and federal officials, followed by years of public hearings, Planning Commission battles, Board of Permit Appeals meetings and audiences with the mayor. As the bulldozers arrived to begin work, neighbors started a sit-in on this site, forcing developers to abandon their plans. The outcome of this struggle permanently changed development in the City and led to legislation requiring a minimum amount of neighborhood open space.

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Title: Corwin Park to Tank Hill - FoundSF

URL: http://www.foundsf.org/index.php?title=Corwin_Park_to_Tank_Hill

Description: To get up to Tank Hill from the intersection of Grand View and Stanton and Market, go across to where the Clayton MUNI switchback is. Proceed a long block to the intersection of Clayton and Corbett, where you will find a pink wall and a sign saying "Pemberton Steps." Take them up!

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Title: Where Exactly is the Geographic Center of San Francisco? | NBC Bay Area

URL: http://www.nbcbayarea.com/news/local/Where-Exactly-is-the-Geographic-Center-of-San-Francisco-382324851.html

Description: NBC Bay Area news segment on the geographic center of San Francisco. The location? On the sidewalk along the 700 block of Corbett Street near Twin Peaks.

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Title: Twin Peaks in 20 Minutes... On Foot!

URL: http://www.noevalleyvoice.com/1999/April/twinpeaks.html

Description: It's true. You can walk up to Twin Peaks from Grand View Avenue and 24th Street in just 20 minutes. Actually, you can complete the ascent in less time than that, but who's racing? Jim Christie tells you how in the April 1999 edition of the Noe Valley Voice.

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Title: Brass disk marking SF’s geographic center is stolen - SFGate

URL: http://www.sfgate.com/bayarea/article/Brass-disc-marking-SF-s-geographic-center-is-7974342.php

Description: "The great city of San Francisco no longer has a center." A brass surveyor’s disk, recently installed on an Upper Market-area sidewalk to mark the precise geographic center of San Francisco, is stolen on June 9, 2016. Reporter Steven Rubenstein follows up on the story.

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Title: SF marks the very middle of town, more or less - SFGate

URL: http://www.sfgate.com/bayarea/article/SF-marks-the-very-middle-of-town-more-or-less-7971599.php

Description: SF Gate reporter Steve Rubenstein joins SF Public Works as they locate and mark the spot that surveyors have determined is the center of San Francisco on June 8, 2016.

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Title: Urban outings: Tank Hill - SFGate

URL: http://www.sfgate.com/thingstodo/article/Urban-outings-Tank-Hill-3237730.php

Description: Tank Hill is a 650-foot-high minipark that offers what many consider to be the most spectacular view of San Francisco of any hilltop park. Dazzling views of San Francisco, dozens of native plant species, plus hawks and endangered butterflies make this little-known but centrally located destination well worth the climb to the top

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Title: Meet the Endangered Mission Blue Butterfly - National Park Service

URL: http://www.sfnps.org/download_product/2426/0/

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Title: Publicity Record book Twin Peaks Parent-Teacher Association

URL: https://ia601603.us.archive.org/28/items/publicityrecordb00twin/publicityrecordb00twin.pdf

Description: The Twin Peaks Parent-Teacher Association Publicity Record book documents a year school events at the Twin Peaks School in San Francisco in 1933-34.

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Subject:   Twin Peaks School, History, San Francisco, public education, arts education, poetry, biodiversity

Title: Twin Peaks PTA (April 1930-April 1931)

URL: https://ia801604.us.archive.org/18/items/twinpeakspta00flde/twinpeakspta00flde.pdf

Description: PTA Publicity book created in 1930 for the Twin Peaks School in San Francisco.

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Subject:   Twin Peaks School, Twin Peaks, History, Public Education, San Francisco

Title: SF Urban Trails: "Creeks to Peaks" Trail Map

URL: https://sfgov.maps.arcgis.com/apps/MapTour/index.html?appid=2e918e66ad0f47cbbb51483c0082f8d2

Description: SF Urban Trails Program "Creeks to Peaks" Trail Map: Following the Islais Creek trail, the Creeks to Peaks trail introduce you to the ecosystems of San Francisco. The 1.8 mile, moderate to strenuous, trail connects Glen Canyon’s Islais Creek to the iconic summit of Twin Peaks. Providing easy access to a natural oasis within an urban environment.

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Title: Karl the Fog ☁️ (@KarlTheFog) | Twitter

URL: https://twitter.com/KarlTheFog/

Description: Twitter account for Karl, the San Francisco Fog, the best fog in the history of the world.

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Title: Common Raven, Identification, All About Birds - Cornell Lab of Ornithology

URL: https://www.allaboutbirds.org/guide/Common_Raven/id/

Description: The Common Raven (Corvus corax), Rooftop's school mascot, can be found flying overhead in Twin Peaks. All About Birds shares lots of cool facts about the Common Raven.

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Subject:   Raven, Birds, Cornell Lab of Ornithology

Title: Twin Peaks Park, San Francisco, CA, US · iNaturalist.org

URL: https://www.inaturalist.org/places/twin-peaks-park/

Description: Introducing some of the species that can be found at Twin Peaks, San Francisco, CA, US. iNaturalist is a place where you can record what you see in nature, meet other nature lovers, and learn about the natural world. In 2014 the California Academy of Sciences acquired iNaturalist, and now serves as the home for this endeavor.

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