Top: The name on the back of this image is John William Slater, 91 Hawthorn Avenue.
No further information has been found about this young soldier.
Middle: On the reverse of this image is the name John William Slater, 91 Hawthorn Avenue.
This is a typical example of a postcard which would be sent to a man serving with the Armed Forces, perhaps John W was the father of this child?
Bottom: All we know of John W is that he lived at 91 Hawthorn Avenue and that he served in the Army.
Presumably he is in this group image.