| 1 | A | B | C | D |
| --- | --- | --- | --- | --- |
| 2 | Silver Age of Comic Books - Collectibility |  |  |  |
| 3 | Title & Issue | Cover date | Publisher | Relevance |
| 4 | Detective Comics #225 | Nov. 1955 | DC | First appearance of Martian Manhunter. |
| 5 | Showcase #4 | Oct. 1956 | DC | First appearance of the Silver Age Flash (Barry Allen). First Silver Age comic. |
| 6 | Showcase #9 | Aug. 1957 | DC | First of two pilot issues for the feature "Superman's Girl Friend, Lois Lane". |
| 7 | Adventure Comics #247 | April 1958 | DC | First appearance of the Legion of Super-Heroes. |
| 8 | Adventure Comics #260 | May 1959 | DC | First appearance of the Silver Age Aquaman. |
| 9 | Action Comics #252 | May 1959 | DC | First appearance of Supergirl (Kara Zor-El), cousin to Superman. |
| 10 | Showcase #22 | Oct. 1959 | DC | First appearance of Green Lantern (Hal Jordan). |
| 11 | The Brave and the Bold #28 | March 1960 | DC | First gathering of DC's superheroes as the Justice League of America. |
| 12 | Richie Rich #1 | Nov. 1960 | Harvey | Richie Rich gets his own title. |
| 13 | Showcase #30 | Feb. 1961 | DC | First of four pilot issues for Aquaman. |
| 14 | The Brave and the Bold #34 | March 1961 | DC | First appearance of Silver Age Hawkman and Hawkgirl. |
| 15 | The Flash #123 | Sept. 1961 | DC | Reappearance of the Golden Age Flash. Introduction of Earth-Two. |
| 16 | The Fantastic Four #1 | Nov. 1961 | Marvel | First appearance of the Fantastic Four. |
| 17 | Tales to Astonish #27 | Jan. 1962 | Marvel | First appearance of Henry Pym, the future Ant-Man. |
| 18 | The Incredible Hulk #1 | May 1962 | Marvel | First appearance of the Hulk. |
| 19 | The Fantastic Four #5 | July 1962 | Marvel | First appearance of Dr. Doom. |
| 20 | Amazing Fantasy #15 | Aug. 1962 | Marvel | First appearance of Spider-Man (Peter Parker). |
| 21 | Journey into Mystery #83 | Aug. 1962 | Marvel | First appearance of Marvel's Thor (Thor Odinson / Donald Blake). |
| 22 | Tales to Astonish #35 | Sept. 1962 | Marvel | First appearance of Ant-Man (Henry Pym). |
| 23 | Doctor Solar, Man of the Atom #1 | Oct. 1962 | Gold Key | First appearance of Doctor Solar. |
| 24 | Magnus, Robot Fighter #1 | Feb. 1963 | Gold Key | First appearance of Magnus, Robot Fighter. |
| 25 | Tales of Suspense #39 | March 1963 | Marvel | First appearance of Iron Man (Tony Stark). |
| 26 | Strange Tales #110 | Jul. 1963 | Marvel | First appearance of Doctor Strange. |
| 27 | Justice League of America #21 | Aug. 1963 | DC | Reappearance of the Golden Age Justice Society of America. |
| 28 | The X-Men #1 | Sept. 1963 | Marvel | First appearance of the X-Men and Magneto (comics). |
| 29 | The Avengers #1 | Sept. 1963 | Marvel | First gathering of Marvel's superheroes as the Avengers. |
| 30 | The Avengers #4 | March 1964 | Marvel | Reappearance of Captain America (Steve Rogers) from the Golden Age of Comic Books. |
| 31 | Daredevil #1 | April 1964 | Marvel | First appearance of Daredevil. |
| 32 | Detective Comics #327 | May 1964 | DC | "New Look" Batman and Robin. |
| 33 | The Brave and the Bold #54 | June 1965 | DC | First appearance of the Teen Titans. |
| 34 | Detective Comics #359 | Jan. 1967 | DC | First appearance of Batgirl (Barbara Gordon). |
| 35 | Green Lantern #76 | April 1970 | DC | "The New Green Lantern / Green Arrow" tackles social issues. |

Question: Who was the publisher of this comic?
Answer: Martian Manhunter introduced in Detective Comics #225 predates Showcase #4 by almost a year.