Clipping on the back of the photo, "Castro Valley, thriving "Community of Self-Sustaining Homes' of Metropolitan Oakland, is pictured above. Construction of modern homes in new subdivisions, the building of new streets and arteries, the operations of nurseries, poultry yards, lumber yards, feed mills, hatcheries and poultry supply firms, create a scene of activity, progress and expansion throughout the area. Castro Valley is particularly noted for its excellent climate and its attractive homes.- Commercial and Photo View Co. photo." Photo is an aerial view of greater Castro Valley, (downtown area).