LETTERS – Deeping St Nicholas help please

I am looking for some help please.
I have written a history of Deeping St Nicholas, published in 2021, and am now working on a second edition, as so much extra information has come my way.
Firstly, I read on the website a letter – admittedly, if I read correctly, written in 2018 – by Mr R Jackson, of Pinchbeck.
He mentions that he lived in Deeping St Nicholas for 40 years; he also mentions the Jubilee Hall.
I have, so far, drawn a complete blank in my research about the hall, and would like to contact him to find out further information about it.
Secondly, I am trying to source a photograph of the Chequers pub in the Tongue End part of Deeping St Nicholas.
It was opened in the 1850s by my great-great grandfather’s brother, but was closed and demolished in the 1930s.
I have found a lot of information about the pub; together with other DSN pubs, the pub information has formed a large chapter in my second edition draft.
I should add that I am a total amateur, and have written the book as an off-shoot of studying my family tree, a pastime I began when I retired in 2010.
I already knew of the parish as my grandmother (and probably some of her siblings) was born in Tongue End.
If anyone has any information at all I would be grateful to hear from them. You can email on andy@ajc4.me.uk

Andy Clark
Sea Lane
Friskney