I have been scouring the interwebnet for online material about the aircrew who took part in the Dams Raid for a project I will be unveiling shortly, but in the meantime, I thought I would share the fruits of part of my research. So far, I have come across these online postwar obituaries:
Ken Brown
George Chalmers
Edward (Johnnie) Johnson
David Rodger
Danny Walker
Thanks to a helpful library subscription, I have also come across four other earlier obituaries which are not generally available in online sources, but can be turned up in newspaper archives. These are of:
Basil Feneron
Harold (Mick) Martin
David Shannon
Paul Brickhill
(I know the last of these did not take part in the Dams Raid himself, but I thought his obituary might be of interest.) I have posted these four obituaries on my other website, and you can see them here.
If you can add any further online or offline material to these links then I would be glad to hear from you.
Dambusters Blog 
Link to Joe McCarthy’s obituary
http://query.nytimes.com/gst/fullpage.html?res=940CE7DB1E38F936A35753C1A96E958260
https://aviation-safety.net/wikibase/139874
This link with reference to the death of Dambuster veteran Arthur Kell may be of some interest.
Thank you for this. Are you related to Arthur Kell? — Charles Foster
That is a good question and something I am interested in investigating. It is a question that has been in the back of my mind for some years since first reading Paul Brickhill’s book.