Vitamin and mineral contents of common fruits
I know two databases for such information: The "National Nutrient Database for Standard Reference" (reference 1) from the United States Department of Agriculture (which you list yourself) and the "Nutrition Data" (reference 2) Database. Both allow searching for specific foods and give the values back. I like the second more, since it gives you the complete output it has and you don't have to choose three single nutrients like for the USDA database.

References:


USDA National Nutrient Database for Standard Reference
Nutrition Data