Bulk Supply Stores?

[Denverchickee]

Hello,

I am looking to purchase some bulk organic grains and such for chicken food. I feel like I am having a hard time finding something in Denver area.

Can anyone recommend some stores.

I am looking for the following items:
Kelp
flax seed
crab meal
cultured yeast
field peas
wheat
oats
barley
fish meal

Thanks in advance for your advice.