Ron, there was definately a few ne comets around that period - check out Maurice Clark's comets of the 70's page from his site
http://www.montgomerycollege.edu/fac...html/c1970.htm
check out the bennet pic of march 28 '70 - woah! nice comet :-)))
Maurice spent a huge amount of time in Western Australia, and most stuff
is taken from there I think? even tho he lives in the U.S. now
http://www.montgomerycollege.edu/fac...k/public_html/
(this is the third diff URL for this guys site ive seen LOL)
his complete old comet collection
http://www.montgomerycollege.edu/fac...tml/comets.htm