All historic structures in the Los Angeles area with the word “ambassador” in their name seem to be doomed. The famed Ambassador Hotel, which once stood at 3400 Wilshire Boulevard in Koreatown, was razed in 2005. And the former Ambassador College, at 131 South St. John Avenue in Pasadena, was largely demolished beginning in 2013. Coincidentally, both sites were featured in the 1996 film That Thing You Do! I never got to see the Ambassador Hotel in person while it was still intact, sadly,...