WikiPedia talk:Selected anniversaries/July 1

1690 - Battle of the Boyne as reckoned under Julian calendar.
1966 - First colour television transmission in Canada, from Toronto.
1968 - Nuclear non-proliferation treaty signed by about sixty countries in Geneva Switzerland
1991 - The Warsaw Pact is officially dissolved.
1996 - Version 1.0 of PNG, an open source competitor to the GIF image format, is finalised.

The TV and non-proliferation events don't seem to have good reference articles