Oopsla!

A mimeographed fanzine published by Gregg Calkins with thirty issues starting in January 1952 and ending in September 1961.

Science Fantasy News #15 said Oopsla! "...has some of the best fan writers, is one of the 'zines no self-respecting fan should miss."

Issue	Date	Pages	Notes
1	January 1952	14
2	February 1952	20
3	March 1952	28
4	May 1952	26
5	June 1952	26
6	August 1952	26
7	August-September 1952	26	mimeographed with Shelby Vick & others, plus coverage of the 1952 Worldcon
8	October 1952	26	mimeographed with Bob Tucker & others
9	January 1953	60	first anniversary issue with Robert Bloch, Bob Tucker, Walt Willis, Richard Geis and others.
10	1953	30	unnumbered pages with general fan material.
11	January 1954	24
12	March 1954	22
13	May 1954	28
14	September 1954	28
15	October 1954	30
16	1954	32
17	May 1955	30	unnumbered pages with Walt Willis, Richard Lupoff and others.
18	November 1955	30	unnumbered pages with Walt Willis, Dean Grenell and others.
19	November 1955	30
20	January 1956	30
21	March 1957	30
22	September 1957	20
23	November 1957	20	unnumbered pages with Robert Bloch, Walt Willis, John Berry and others.
24	1958	22	unnumbered pages with Walt Willis, and John Berry.
25	1958	26	unnumbered pages with Robert Bloch, Walt Willis, John Berry and others.
26	1958	~24	unnumbered pages with Harry Warner, and John Berry.
27	1959	~26	unnumbered pages with Bob Tucker, Harry Warner, Dean Grenell, Ron Bennett and others.
28-29, Part 1	October 1959	~20	unnumbered pages with Horace Gold, Walt Willis, Harry Warner, Ron Bennett and others.
28-29, Part 2	December 1959	~22	unnumbered pages with Horace Gold, Walt Willis and others.
29.5	March 1960	6	This was also known as Interim #s 29-30.
30	September 1961	~40	unnumbered pages, Robert Bloch special issue, with Robert Bloch, Walt Willis, Bob Tucker & Dean Grenell, plus index to the first 30 issues & 2 covers by George Barr. Final issue.

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