The links in my earlier post may have been corrupted if opened in HTML format. Here are the download links again in a shortened URL format, PDF of PowerPoint version of shoreline analysis showing beach and flat rock did not exist before the middle twentieth century: http://goo.gl/dclU1U Full version of Fairest Picture - Mark Twain at Lake Tahoe in PDF: http://goo.gl/fxsdvl David C. Antonucci Autor of Fairest Picture