The Los Angeles Conservancy's "Curating the City: Wilshire Boulevard" site may be the definitive place to read up and map all things Wilshire.
Per the Conservancy, "'Curating the City: Wilshire Blvd.' kicked off on October 2, 2005 with an architectural tour of six historic sites along the boulevard. It continued through November 2005 with a range of related events presented in conjunction with partnering organizations along Wilshire. Events ranged from a family art workshop, to panel discussions, to a photo exhibit, spoken word event, and even a fashion show. The program produced permanent resources such as a Kids’ Guide to Wilshire, a trilingual booklet (in English, Spanish, and Korean), teaching materials, and an award-winning website."
Here are links to some of those resources:
Explore Wilshire Blvd.: Use this map to explore the great places of Wilshire Boulevard, firsthand or online.
History of Wilshire Blvd.: The story of Wilshire is the story of Los Angeles. Visit these pages to learn more, and explore 30,000 years of history on the timeline below.
Birth of the Boulevard - how Wilshire began
Life in the Fast Lane - our love affair with the automobile
Wilshire Today - new communities adding their own layers of history
Preserving Wilshire's History - how the boulevard reflects the need for, and value of, preservation
Neighborhoods - overviews of eight neighborhoods from downtown to the ocean