Where is Hollywood?

Hollywood and Highland, 1907. Source.

There was a municipality called Hollywood. It existed from 1903 to 1910. This Hollywood gave up its independence to Los Angeles in exchange for water. Los Angeles was about to arrange for a steady supply via William Mulholland’s Los Angeles Aqueduct, and thirsty Hollywood needed in. (Will this happen to other cities? Countries?)

What is the definition of Hollywood? Here is a map that appears to show the old municipality, I found it on Pinterest (barf) and cannot trace it to a source, this is the closest I get:

Here’s how the LA Times defines Hollywood:

Also seems to be a dead link, I found it here.

AboutHollywood.com tells us this:

Although it is not the typical practice of the City of Los Angeles to establish specific boundaries for districts or neighborhoods, Hollywood is a recent exception. On February 16, 2005, Assembly Members Goldberg and Koretz introduced a bill to require the State to keep specific records on Hollywood as though it were independent. For this to be done, the boundaries were defined. This bill was unanimously supported by the Hollywood Chamber of Commerce and the LA City Council. Assembly Bill 588 was approved by the Governor on August 28, 2006, and now the district of Hollywood has official borders. The border is shown at the right, and can be loosely described as the area east of Beverly Hills and West Hollywood, south of Mulholland Dr., Laurel Canyon, Cahuenga Blvd. and Barham Blvd., and the cities of Burbank and Glendale, north of Melrose Avenue, and west of the Golden State Freeway and Hyperion Avenue.

But how to explain this sign, found on Melrose and Flores (the southwest corner, in fact!) which would push the boundary of Hollywood further west than anyone is prepared to acknowledge?