The Duke authority, as far as I know, is Evelyn Duke Brandenberger of Houston, TX. She is about 93 yrs old now, but as sharp as a tack. I have copies of both of her books on the Duke family. No mention is made of a Sarah Lett, but I will keep my eye peeled for her. I would love to have a copy of the Mecklenberg land map. However you want to get it to me is ok. I will happily reimburse you for expenses. My snail mail address is: Evelyn Mitchell Smith, 302 NW Ridgeview Way, Lawton, OK 73505-6132. Thanks so much. Let's keep in touch. Where did your Sarah Lett Duke live after Mecklenberg Co, VA? Where did she marry Mr. Duke? I will happily check the Duke books for a connection. EM Smith