Rancho Azusa de Dalton

[1] Arenas sold his Rancho Azusa de Duarte holdings three years later to Henry Dalton (1803–1884), a wealthy merchant from Pueblo of Los Angeles.

Cities that have been established on the Rancho lands originally granted to Henry Dalton include Azusa, Arcadia, Monrovia, Irwindale and Baldwin Park.

[2] Luis Arenas received the Rancho El Susa land grant from Governor (pro-tem) Manuel Jimeno in 1841.

In the end Dalton owned an unbroken expanse of land from the present day San Dimas to the eastern edge of Pasadena.

[4] With the cession of California to the United States following the Mexican-American War, the 1848 Treaty of Guadalupe Hidalgo provided that the land grants would be honored.