

Original cover by Neal Adams; DC 1971. Matt Kimble's website is here.
Phantom Stranger #7 (On Sale: March 12, 1970) has a great cover by Neal Adams. this is the second issue to use the Phantom Stranger as a passive part of the background, as a force maybe not controlling events, but watching them unfold.
Jim Aparo's Phantom Stranger has that sort of domino mask like another character called the Phantom which Aparo was known to draw from time to time, but his pages and panels are much darker than the work he did on that other Phantom. His panels here are dense and full of detail and loaded with dark and unsettling corners where god knows what may be lurking. There is a rich yet claustrophobic feeling to the artwork in this book, very much at odds with the open feeling you get from his Aquaman pages of the same time. His visual voice fully secured in Aparo's hands, this is the point where the Phantom Stranger finally took root.
Brave and the Bold #89 (On Sale: February 24, 1970) has a Batman and Phantom Stranger cover by Neal Adams over an obvious Carmine Infantino layout. This is the first issue to use the new Batman logo, which will disappear next issue but return after that.
Phantom Stranger #6 (On Sale: January 15, 1970) has another winning cover by Neal Adams. The Stranger appears as a background face for the first time.
Phantom Stranger #5 (On Sale: November 13, 1969) has a nice cover by Neal Adams. This will be the last cover for a while that shows the Stranger as an actual character on the cover.
Phantom Stranger #4 (On Sale: September 16, 1969) has a cover by Neal Adams.
Phantom Stranger #3 (On Sale: July 15, 1969) has its first cover by Neal Adams, and the new Neal Adams logo. What is interesting is that while the logo depicts the revamped Phantom Stranger, using his hat's shadow as a mask, the cover shows an entirely different guy, closer to the Bill Draut covers of the first two issues.
Phantom Stranger #2 (On Sale: May 13, 1969) has a cover by Bill Draut. The character is still two issues away from a stylistic redesign at the hands of Neal Adams which will transform the character forever.
Phantom Stranger #1 (On Sale: March 13, 1969) has a cover by Bill Draut.
Showcase #80 (On Sale: December 12, 1968) has a Phantom Stranger cover by Neal Adams.