If you have a signature stamp and book, stamp your stamp in the cache logbook and then stamp the cache stamp in your book.
If you don't, all that is required is to sign the log, but that isn't very creative and letterbox hybrids are about being creative. Here are some ideas. Use the ink pad and make a fingerprint in the logbook, then add ears, tail, etc., to make an animal. Draw a signature picture. Use your pathtag as signature stamp. You have our permission to be creative, just don't use more than one page in the log book.
The SS Carl D. Bradley was a self-unloading Great Lakes freighter that sank in a Lake Michigan storm on November 18, 1958. Of the 35 crew members, 33 died in the sinking. Her sinking was likely caused by structural failure from the brittle steel used in her construction. But this fact doesn’t begin to describe what those two survivors went through.
This excerpt from the website carldbradely.org gives us a hint of what they went through:
About 5:30 pm First Mate Elmer Flemming radioed Calcite that the Bradley would arrive at 2:00 am. Then a "loud thud" was heard. In the pilothouse Captain Bryan and Flemming looked aft and saw the stern sag. Flemming immediately sent a distress signal over the radio. "Mayday! Mayday! This is the Carl D. Bradley. Our position is approximately twelve miles southwest of Gull Island. We are in serious trouble! We're breaking up!" Captain Bryan sounded the general alarm, signaled the engine room to stop the ship, and blew the whistle to abandon ship. The power system failed and the lights in the bow section went out. The Bradley heaved upward near amidships and broke in two. The forward section rolled over and sank. The stern end plunged to the bottom. Within a few minutes the Carl D. Bradley was gone.
In those first minutes Elmer Flemming realized he did not have a life jacket. He went to his stateroom two decks below to get the life jacket and returned to the deck of the pilothouse where the life raft was located. He saw Captain Bryan and other crewmembers pulling themselves along the boat's railing to the high side of the bow. The forward section was listing (leaning) to the port side. Suddenly the bow lurched and he was thrown into the water. When he came to surface, the forward section was gone and he saw the after section swing to the port side. With the propeller high in the air, the stern plunged to the bottom with lights burning. As the stern section plunged there was an explosion and a flash of flame - the water had reached the boilers.
Four men made it to one of the life rafts: Flemming and deckhands Frank Mayes, Dennis Meredith and Gary Strzelecki. They clung for dear life as the raft was tossed about by the waves. The night was long, filled with terror, mountainous waves, howling wind and bone-numbing cold water. Some of the men had very little or light clothing. Dennis Meredith had no shoes, only pants and sweat shirt. The raft was upset several times. Flemming could not remember how many times he was washed off. He and Frank Mayes hung on. Dennis Meredith and Gary Strzelecki did not survive. Frank Mayes remembered thinking that someone would find them if they could last through the night. He also remembered ice forming in his hair and ice encrusted on his life jacket. He laid face down on the raft and gripped the sides of the raft to hold on.
To find the cache. From the starting coordinates, look West. You will see a plank that leads up to a door. Walk the plank. Once inside you will need to find the lifeboat from the Carl D. Bradley that saved the survivors lives (don't worry, it's not a huge place). Now look carefully underneath the boat. Muggles can be an issue at times. Placed with permission of the Beaver Island Historical Society.