https://www.universetoday.com/articles/did-mariner-iv-pass-through-a-comets-tail
Did Mariner IV Pass Through a Comet's Tail? - Universe Today
comet s tailmariner ivpass through
https://spaceref.com/status-report/first-tv-image-of-mars-from-mariner-iv-in-1964-hand-colored/
First TV Image of Mars From Mariner IV in 1964 - Hand Colored - SpaceRef
Jun 24, 2011 - Space news and reference site.