Source and locator: Dolores Hayden, Biddy Mason’s Los Angeles 1856–1891, California History 68(3), Fall 1989, pp.86–99; related discussion in The Power of Place (1995).
Inspection and evidence boundary: Earlier research attributed four lots and $375 to an acquisition from Charles Owens and Martha Hall near Olive and Charity Streets. Exact recording citation and original instrument remain unrecovered. Preserve as an open research lead, not verified portfolio acreage or consideration; reconcile against probate and title chain.