May Challenge Mystery Cache

Genesis:

See the other Minnesota month challenges (Listed Below). May is a great month to cache because the snow is gone(We Hope) and it's finally starts to feel like spring. Minnesota is truly a beautiful place to explore in the early summer, and besides, my birthday(Berry's) is in May so it was the perfect month to pick for my entry in this series of caches!

FAQ:

1. What counts and what doesn't? Caches that have physical logs, i.e. traditionals, multi's, puzzles, and letterbox hybrids but not virtuals, events, earthcaches, webcams, or locationless caches. Furthermore, premium member only and whereigo caches don't count.
2. How about other months? Please go ahead and place a "September Blackout Challenge" or another month that hasn't been chosen. That would create a total of 12 caches.
3. Why just Minnesota? This challenge is following the same format as the others already released.
4. How about Wisconsin? Go ahead and place a "July Blackout Challenge - WI". If we did that for each state and each month we'd have 600 new caches!
5. How about using find dates rather than placed dates? Wow! That'd be 1200 new caches.
6. Do prior finds count? Yes, but that's not as big of an advantage as it might seem.
7. Why's that? If you just were to find July-placed caches at random, after a while you would start to duplicate placement dates. For example, after about 30 finds of July-placed caches you still would have about eleven to go, after 60 that would be down to about four; only after 120 would you have half a chance of finding them all. And multiply those numbers by about 20 to account for all months and you'd need a couple thousand or so Minnesota finds to have even half a chance. So most cachers should have at least a few caches to find.
8. What are the logging requirements? In either order, you have to find and sign the log at the posted coordinates and you have to either bookmark or email a list of the GCXXX for your 31 finds, each of which must have been found and logged by you personally. After you've done both you may claim the find. Please try to order your bookmark by July placement date.
9. How can I easily obtain the placements dates of caches I've found? One way is to scan the "All Cache Finds" list for your profile.
10. How do I find caches according to their placement date?One way is to scan through caches listed for Minnesota. These are arranged by placement date. You might need to go back through the years.
11. What if I've more questions? Just ask. Anything significant that's been overlooked will be listed and dated here.

Here are the other caches in the series:

January Challenge by dgauss
February Challenge by sparkyfry