When I looked at the Cato edit it was simply a removal of the reference the addition of another donor and a change in the language Without an edit summary to explain the changes were unjustified Your clarification certainly helps Thanks also for adding the reference on Summers Frankly I did not look at the sources removed or added My main concern was the unexplained edits Summaries are important And then I saw that the messages about these same concerns from a while back so my message is more of a reminder Most importantly you are incorrect if you think it is not against the rules to add unsourced material One of the core content policies is WP V and WP RS allows us to carry out that policy Happy editing