Summary of Sources:
http://www.longlongtrail.co.uk/army/order-of-battle-of-divisions/63rd-royal-naval-division/
https://en.wikipedia.org/wiki/63rd_(Royal_Naval)_Division
http://bedfordregiment.org.uk/4thbn/4thbtnphotos1.html
http://www.bedfordregiment.org.uk/4thbn/4thbtn1918diary.html
https://en.wikipedia.org/wiki/Bedfordshire_and_Hertfordshire_Regiment
http://www.bedfordregiment.org.uk/history/16thfoothistory.html
http://ww1photos.com/blog5/2016/03/09/bedfordshire-regiment-4th-battalion-officers-group-photo/
https://tommysfootprints.wordpress.com/about-tommys-footprints/
https://www.facebook.com/tommysfootprints/
http://www.harwichanddovercourt.co.uk/the-war-years/
https://www.thegazette.co.uk/London/issue/30648/supplement/4967
http://bedsatwar.blogspot.co.uk/
http://www.wartimememoriesproject.com/greatwar/hospitals/
https://www.treasurebunker.com/forums/index.php?/topic/1657-the-royal-naval-division-in-ww1/
https://en.wikipedia.org/wiki/Operation_Michael
I have tried to indicate every source but this became difficult with some of the photos.
If you have any questions, you can email me at thosedistantechoes@gmail.com (pls include Frank Munkman in the email heading)