Differential

A fanzine published by Paul Wyszkowski of Ottawa, ON. The last few issues were named Ergo Sum.

Issue	Date	Pages	Notes
1	July 1962
2	August 1962	2
3	September 1962	2
4	October 1962	2
5	December 25, 1962	2
6	December 1962	2
7	January 1963	2
8	February 1953	2
9	March 1963	2
10	April 1963	2
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37	August 1965
38			Now named Ergo Sum
39	February 1966
40
41			Tricon issue

• Differential online at fanac.org

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Publication

1962—

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