The article “Blame arsonists for fire that destroyed old homes” from October of 1969 by Frank Gonzalez (http://dbase1.lapl.org/webpics/calindex/documents/10/520332.pdf) details the fire that destroyed the Salt Box and the Castle, two historic mansions that had been moved to Heritage Square Park. The article gives a bit of information about the houses and a lot of information about the crime. Check it out.