I believe what you're referring to is the inscription on Susy's headstone: Warm summer sun Shine kindly here Warm southern wind blow gently here Green sod above Lie light, lie light Good night, dear heart, Good night, good night. This was written, not by Twain, but by an Australian poet, Robert Richardson. This is described, with a photo of the stone, in Mark Twain in Elmira, edited by Herbert Wisbey and Bob Jerome, published by the Mark Twain Society. Mark Woodhouse Mark Twain Archives Elmira College