There is a poem called "Sleepless" that is attributed to Sara Teasdale, but I cannot find a single citation on where it was originally published. It is found in an anthology called The Seashell Anthology of Great Poetry which was published in 1996, but that was long since her death. I'm looking for any original publication around the time she was alive in the early 1900s. This is for copyright clearance purposes; if the poem was published early enough, it may be in the public domain. Thank you in advance for any help you can provide.