Northwest Federal Credit Union is offering an 18 month CD for 6.00% APY. $10K minimum.
From the membership page...
If you are an employee or member of any of the more than 400 Member Companies or one of our Chamber of Commerce Members, you are eligible to join NWFCU.
One of the member companies is the National Wildlife Federation. Join for $15 - link courtesy of mh83.
Looks like NWFCU wasn't happy with the flood of new members and decided to restrict NWF applicants to employees only. I say don't let that stop you. Try another organization on the list of member companies. One option is to join the International Spy Museum for $60.
NWFCU has apparently decided to allow CU membership only to employees (not members) of its "membership" companies. YMMV.