I forgot to mention and link to the USDA's database for food composition in my post on how much omega-6 you need to eat to get enough. Here you go:
USDA National Nutrient Database for Standard Reference
Here are a couple of more official databases to help you get all the high-quality information you want.
The official Danish Food Composition Database
Canadian Nutrient File
Australian Food Composition Program has NUTTAB and AUSNUT.