Here's the link to order your Fed Stamp from CWA (if you want to go that route). $5 handling fee so it's $30 total.
Here's the online link for the 2018/19 fed stamp from CWA...
https://www.calwaterfowl.org/product/2018-19-federal-duck-stamp/
Here's the online link for the 2018/19 fed stamp from CWA...
https://www.calwaterfowl.org/product/2018-19-federal-duck-stamp/