The Registered Envelope looks to be date dated 10 17 1898 or 1888.  The Plat Map came in the envelope when I got it at the estate sale.  But I think the date on it says 8 - 21 - 25. I'm not sure if 1925 or 1825.  Don't know if this wasn't originally with the registered envelope or was reprinted at a later date and that explains date differental.   Look at the pictures as a reference and ask any questions thanks