This is an interesting collection of personal letters to a Sgt Wilson at RAF Blyton in Lincolnshire. It also includes an RAF Leconfield / Driffield Gazette newspaper from February 1943 which is 4 pages long. There are two photographs featuring Bomber crews and a genuine shoulder patch. There is also a cloth backed map of Lincolnshire from the same collection.
Worth researching further as his service number is written on the envelopes.