Excellent article on development of Sunnyside. Here's an interesting factoid regarding Ernest and Oscar Hueter, brothers who developed the area surrounding the Aptos School. The Hueter Bros were grarndsons of Claus Mangels, after whom Mangels Ave takes its name. Also, "San Aleso" was named after Alice Hueter (Mertz), a sister. Claus Mangels maintained a summer home in Aptos, still standing, and was brother-in-law to Claus Spreckels.