[2] In the early 19th century during the era of Mexico's General Colonization Law,[3] Manuel Yturri de Castillo was given a land grant on property once owned by Mission Concepcion.

His granddaughter Ernestine Edmunds bequeathed the property in the historic site to the San Antonio Conservation Society (SACS), which took possession of it in 1961.

Also on the site is an operational grist mill thought to have existed when Yturri de Castillo bought the property.

[7] An 1881 two-story carriage house originally on the Oge property was purchased by SACS in 1964, restored and moved to the Yturri–Edmunds site.

[8] A caliche and stone home built by Cristof Postert on South Flores was donated to SACS in 1984 and also moved to the Yturri–Edmunds site.