After a happy hour or two with Astrometry.net and JPL Horizons I’ve come up with these solutions:
Print 2
Comet C/1969Y1 Bennett
1970 May 23rd at around 00.00hrs + or – 1hr UT
Up is 7.61 degrees E of N
FOV 12.8 x 9.21 degs
Print 3
Comet C/1969Y1 Bennett
1970 May 6th at approx 04.40UT
Up is 358 degrees E of N
FOV 13 x 9.18 deg
Print 4
Comet C/1969Y1 Bennett
1970 May 4th at approx 01.15UT
Up is 358 degrees E of N
FOV 13 x 9.18 deg
Would someone like to check out my conclusions?
Can’t help with observers though!
Peter