Where to find

[Stargeezer]

I'm new to fossil hunting, have found a few locally. I'm going to Scottsbluff, Ne. the last week of May. Would someone be willing to give me a couple of leads on where to find fossils/agates in the I90 corridor from Minn border to Rapid City, SD, then So to Scottsbluff ? Nothing real extensive, more casual-like. Perhaps share a couple of hours searching together? I've got a book that's several decades old with leads, but don't know how accurate it is nowdays. Legal only, of course. I'll also be posting something like this in the minerals forum. Thanks, I appreciate all help. Mark