| Covers listed |
|
| 1935: | 3 November, 10 November, 1 December, |
| 1936: | 12 January, 19 January, |
| 1937: | 18 July, |
| 1938: | 21 August, 25 September, 6 November, |
| 1939: | 2 April, 7 May, 21 May, 11 June, 29 October, 5 November, 17 December, |
| 1940: | 4 February, 10 March, 16 June, |
| 1941: | 12 January, 20 July, 24 August, 21 September, |
| 1942: | 22 February, 29 March, 21 June, 22 November, |
| 1943: | 28 March, 18 April, 23 May, 8 August, |
| 1944: | 30 January, 15 October, |
| 1946: | 12 May, 2 June, 27 October, |
| 1948: | 22 February, 7 November, |
| 1949: | 13 February, 15 May, 24 July, 14 August, 25 September, |
| 1950: | 7 May, 9 July, 24 September, 1 October, |
| 1951: | 8 April, 12 August, 25 November, |
| 1952: | 10 February, 23 March, 18 May, 1 June, 15 June, 22 June, 12 October, 30 November, |
| 1953: | 15 February, 12 April, 23 August, 15 November, 22 November, 13 December, |
| 1954: | 23 May, 13 June, 22 August, 28 November, |
| 1955: | 6 March, 27 March, 3 April, 16 October, 27 November, |
| 1956: | 29 January, 5 February, 11 March, 17 June, |
| 1957: | 20 January, 10 March, 31 March, 7 April, 15 September, 10 November, 1 December, |
| 1958: | 16 November, |
| 1959: | 12 April, 27 June, |
| 1960: | 17 January, 6 March, 10 April, 24 July, |
| 1961: | 22 January, |
| 1962: | 20 May, 5 August, |
| 1963: | 21 April, 27 October, 3 November, 10 November, 1 December, 8 December, |
| 1964: | 15 November, |
| 1965: | 24 January, |
| 1966: | 8 May, 20 November, |
| 1967: | 2 April, |
| 1970: | 13 September, |
| 1982: | 8 January, 13 June, |
