Since DC has left these the only un-collected ones from Kirby's 1970-1976 canon of work for DC, here are the JUSTICE, INC stories, accessible online for your reading pleasure.

issue 1 "THis Night An Avenger Is Born", 18p O'Neil story/ Al McWilliams art
issue 2"The Skywalker", 18 pages, by O'Neil, Kirby/Royer
issue 3 "The Monster Bug", 18 pages, by O'Neil, Kirby/Royer
issue 4 "Slay Ride In The Sky", 18 pages, by O'Neil, Kirby/Royer

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More recently added on a more easily navigated site, in a larger size:
https://readcomiconline.to/Comic/Justice-Inc-1975/Issue-2?id=171290