Not sure, but you might want to remove the name of the show you are going to. I've seen other instances of venues/shows being removed, I'm not entirely familiar with what is allowed when discussing illegal substances and concerts. As yuca said, LSD is very easy to hold onto for a while. It breaks down when exposed to heat, light and moisture, but it still is easy to preserve. I believe I've heard of people putting tabs in a book for years and the tabs being potent as ever. I would personally wrap the tabs in tinfoil, then put the tinfoil in a plastic zippy bag, then put it in a book in the freezer. I also don't have to worry about people going through stuff in my freezer, my room mates know why the book is there.