An curious article on the "Fairy Coffins" found in Edinburgh in 1836 at the Smithsonian: http://www.smithsonianmag.com/history/edinburghs-mysterious-miniature-coffins-22371426/?no-ist.
And, on a similar note, a "Fairy Census", inventory of fairy sightings throughout the UK. Searches for other locations will reveal as many throughout the US, Canada, and the rest of Europe...