HUGE Vintage Lot Handwritten Letters & Cards 70s 80s Friends Love Royal Castle

Please see all photos and ask any questions before bidding. All sales are final. Huge lot of letters written in the 70s and 80s between friends, military and civilian friends, girlfriends/boyfriends/breakups/a sons letter to parents explaining that he was leaving home to live on his own and support himself against their wishes, vintage greeting cards including Hallmark and Crayola, and a vintage Royal Castle postcard. I have NOT read ALL of the letters, therefore, I am unaware of the content within all the letters.