| Covers listed |
|
| 1958: | Vol 12 # 1Fall, Vol 12 # 2Winter, |
| 1959: | Vol 12 # 3Spring/March/April/May, Vol 12 # 4Summer/June/July/August, Vol 13 # 1Fall/September/October/November, Vol 13 # 2Winter/December, |
| 1960: | Vol 13 # 3Spring/March/April/May, Vol 13 # 4Summer/June/July/August, Vol 14 No 1Fall, Vol 14 # 2Winter/December, |
| 1961: | Vol 14 # 3Spring/March/April/May, Vol 14 # 4Summer/June/July/August, Vol 15 # 1Fall/September/October/November, Vol 15 # 2Winter/December, |
| 1962: | Vol 15 # 3Spring/March/April/May, Vol 15 # 4Summer/June/July/August, Vol 16 # 1Fall/September/October/November, Vol 16 # 2Winter/December, |
| 1963: | Vol 16 # 3Spring/March/April/May, Vol 16 # 4Summer/June/July/August, Vol 17 # 1Fall/September/October/November, Vol 17 # 2Winter/December, |
| 1964: | Vol 17 # 3Spring/March/April/May, Vol 17 # 4Summer/June/July/August, Vol 18 # 1Fall/September/October/November, Vol 18 # 2Winter/December, |
| 1965: | Vol 18 # 3Spring/March/April/May, Vol 18 # 4Summer/June/July/August, Vol 19 # 1Fall/September/October/November, Vol 19 # 2Winter/December, |
| 1966: | Vol 19 # 3Spring/March/April/May, Vol 19 # 4Summer/June/July/August, Vol 20 # 1Fall/September/October/November, Vol 20 # 2Winter/December, |
| 1967: | Vol 20 # 3Spring/March/April/May, Vol 20 # 4Summer/June/July/August, Vol 21 # 1Fall/September/October/November, Vol 21 # 2Winter/December, |
| 1968: | Vol 21 # 3Spring/March/April/May, Vol 21 # 4Summer/June/July/August, Vol 22 # 1Fall/September/October/November, Vol 22 # 2Winter/December, |
| 1969: | Vol 22 # 3Spring/March/April/May, Vol 22 # 4Summer/June/July/August, Vol 23 # 1Fall/September/October/November, Vol 23 # 2Winter/December, |
| 1970: | Vol 23 # 3Spring/March/April/May, Vol 23 # 4Summer/June/July/August, Vol 24 # 1Fall/September/October/November, Vol 24 # 2Winter/December, |
| 1971: | Vol 24 # 3Spring/March/April/May, Vol 24 # 4Summer/June/July/August, Vol 25 # 1Fall/September/October/November, Vol 25 # 2Winter/December, |
| 1972: | Vol 25 # 3Spring/March/April/May, Vol 25 # 4Summer/June/July/August, Vol 26 # 1Fall/September/October/November, Vol 26 # 2Winter/December, |
| 1973: | Vol 26 # 3Spring/March/April/May, Vol 26 # 4Summer/June/July/August, Vol 27 # 1Fall/September/October/November, Vol 27 # 2Winter/December, |
| 1974: | Vol 27 # 3Spring/March/April/May, Vol 27 # 4Summer/June/July/August, Vol 28 # 1Fall/September/October/November, Vol 28 # 2Winter/December, |
| 1975: | Vol 28 # 3Spring/March/April/May, Vol 28 # 4Summer/June/July/August, Vol 29 # 1Fall/September/October/November, Vol 29 # 2Winter/December, |
| 1976: | Vol 29 # 3Spring/March/April/May, Vol 29 # 4Summer/June/July/August, Vol 30 # 1Fall/September/October/November, Vol 30 # 2Winter/December, |
| 1977: | Vol 30 # 3Spring/March/April/May, Vol 30 # 4Summer/June/July/August, Vol 31 # 1Fall/September/October/November, Vol 31 # 2Winter/December, |
| 1978: | Vol 31 # 3Spring/March/April/May, Vol 31 # 4Summer/June/July/August, Vol 32 # 1Fall/September/October/November, Vol 32 # 2Winter/December, |
| 1979: | Vol 32 # 3Spring/March/April/May, Vol 32 # 4Summer/June/July/August, Vol 33 # 1Fall/September/October/November, Vol 33 # 2Winter/December, |
| 1980: | Vol 33 # 3Spring/March/April/May, Vol 33 # 4Summer/June/July/August, Vol 34 No 1Fall, Vol 34 # 2Winter/December, |
| 1981: | Vol 34 # 3Spring/March/April/May, Vol 34 # 4Summer/June/July/August, Vol 35 No 1Fall, Vol 35 # 2Winter/December, |
| 1982: | Vol 35 # 3Spring/March/April/May, Vol 35 # 4Summer/June/July/August, Vol 36 # 1Fall/September/October/November, Vol 36 # 2Winter/December, Vol 35 No 4Summer, Vol 36 No 1Fall, |
| 1983: | Vol 36 # 3Spring, Vol 36 # 4Summer, Vol 37 No 1Fall, Vol 37 No 2Winter, |
| 1984: | Vol 37 # 3Spring/March/April/May, Vol 37 # 4Summer/June/July/August, Vol 38 # 1Fall/September/October/November, Vol 38 # 2Winter/December, |
| 1985: | Vol 38 # 3Spring/March/April/May, Vol 38 # 4Summer/June/July/August, Vol 39 # 1Fall/September/October/November, Vol 39 # 2Winter/December, |
| 1986: | Vol 39 # 3Spring/March/April/May, Vol 39 # 4Summer/June/July/August, Vol 40 # 1Fall/September/October/November, Vol 40 # 2Winter/December, |
| 1987: | Vol 40 # 3Spring/March/April/May, Vol 40 # 4Summer/June/July/August, Vol 41 # 1Fall/September/October/November, Vol 41 # 2Winter/December, |
| 1988: | Vol 41 # 3Spring/March/April/May, Vol 41 # 4Summer/June/July/August, Vol 42 # 1Fall/September/October/November, Vol 42 # 2Winter/December, |
| 1989: | Vol 42 # 3Spring/March/April/May, Vol 42 # 4Summer/June/July/August, Vol 43 # 1Fall/September/October/November, Vol 43 # 2Winter/December, Vol 42 No 3Spring, |
| 1990: | Vol 43 # 3Spring/March/April/May, Vol 43 # 4Summer/June/July/August, Vol 44 # 1Fall/September/October/November, Vol 44 # 2Winter/December, |
| 1991: | Vol 44 # 3Spring/March/April/May, Vol 44 # 4Summer/June/July/August, Vol 45 # 1Fall/September/October/November, Vol 45 # 2Winter/December, |
| 1992: | Vol 45 # 3Spring/March/April/May, Vol 45 # 4Summer/June/July/August, Vol 46 # 1Fall/September/October/November, Vol 46 # 2Winter/December, Vol 46 No 2Winter, |
| 1993: | Vol 46 # 3Spring/March/April/May, Vol 46 # 4Summer/June/July/August, Vol 47 # 1Fall/September/October/November, Vol 47 # 2Winter/December, |
| 1994: | Vol 47 # 3Spring/March/April/May, Vol 47 # 4Summer/June/July/August, Vol 48 # 1Fall/September/October/November, Vol 48 # 2Winter/December, |
| 1995: | Vol 48 # 3Spring/March/April/May, Vol 48 # 4Summer/June/July/August, Vol 49 # 1Fall/September/October/November, Vol 49 # 2Winter/December, |
| 1996: | Vol 49 # 3Spring/March/April/May, Vol 49 # 4Summer/June/July/August, Vol 50 # 1Fall/September/October/November, Vol 50 # 2Winter/December, |
| 1997: | Vol 50 # 3Spring/March/April/May, Vol 50 # 4Summer/June/July/August, Vol 51 # 1Fall/September/October/November, Vol 51 # 2Winter/December, |
| 1998: | Vol 51 # 3Spring/March/April/May, Vol 51 # 4Summer/June/July/August, Vol 52 # 1Fall/September/October/November, Vol 52 # 2Winter/December, |
| 1999: | Vol 52 # 3Spring/March/April/May, Vol 52 # 4Summer/June/July/August, Vol 53 # 1Fall/September/October/November, Vol 53 # 2Winter/December, |
| 2000: | Vol 53 # 3Spring/March/April/May, Vol 53 # 4Summer/June/July/August, Vol 54 # 1Fall/September/October/November, Vol 54 # 2Winter/December, |
| 2001: | Vol 54 # 3Spring/March/April/May, Vol 54 # 4Summer/June/July/August, Vol 55 # 1Fall/September/October/November, Vol 55 # 2Winter/December, |
| 2002: | Vol 55 # 3Spring/March/April/May, Vol 55 # 4Summer/June/July/August, Vol 56 # 1Fall/September/October/November, Vol 56 # 2Winter/December, |
| 2003: | Vol 56 # 3Spring/March/April/May, Vol 56 # 4Summer/June/July/August, Vol 57 # 1Fall/September/October/November, Vol 57 # 2Winter/December, |
| 2004: | Vol 57 # 3Spring/March/April/May, Vol 57 # 4Summer/June/July/August, Vol 58 # 1Fall/September/October/November, Vol 58 # 2Winter/December, |
| 2005: | Vol 58 # 3Spring/March/April/May, Vol 58 # 4Summer/June/July/August, Vol 59 # 1Fall/September/October/November, Vol 59 # 2Winter/December, |
| 2006: | Vol 59 # 3Spring/March/April/May, Vol 59 # 4Summer/June/July/August, Vol 60 # 1Fall/September/October/November, Vol 60 # 2Winter/December, |
| 2007: | Vol 60 # 3Spring/March/April/May, Vol 60 # 4Summer/June/July/August, Vol 61 # 1Fall/September/October/November, Vol 61 # 2Winter/December, |
| 2008: | Vol 61 # 3Spring/March/April/May, Vol 61 # 4Summer/June/July/August, Vol 62 # 1Fall/September/October/November, Vol 62 # 2Winter/December, |
| 2009: | Vol 62 # 3Spring/March/April/May, Vol 62 # 4Summer/June/July/August, Vol 63 # 1Fall/September/October/November, Vol 63 # 2Winter/December, |
| 2010: | Vol 63 # 3Spring/March/April/May, Vol 63 # 4Summer/June/July/August, Vol 64 # 1Fall/September/October/November, Vol 64 # 2Winter/December, |
| 2011: | Vol 64 # 3Spring/March/April/May, Vol 64 # 4Summer/June/July/August, Vol 65 # 1Fall/September/October/November, Vol 65 # 2Winter/December, |
| 2012: | Vol 65 # 3Spring/March/April/May, Vol 65 # 4Summer/June/July/August, Vol 66 #1Fall, Vol 66 #2Winter, |
| 2013: | Vol 66 #3Spring, Vol 66 #4Summer, Vol 67 #1Fall, Vol 67 #2Winter, |
| 2014: | Vol 67 #3Spring, Vol 67 No 4Summer, Vol 68 No 1Fall, Vol 68 No 2Winter, |
| 2015: | Vol 68 No 3Spring, Vol 68 No 4Summer, Vol 69 No 1Fall, Vol 69 No 2Winter, |
| 2016: | Vol 69 No 3Spring, Vol 69 No 4Summer, Vol 70 No 1Fall, Vol 70 No 2Winter, |
| 2017: | Vol 70 No 3Spring, Vol 70 No 4Summer, Vol 71 No 1Fall, Vol 71 No 2Winter, |
| 2018: | Vol 71 No 3Spring, Vol 71 No 4Summer, Vol 72 No 1Fall, Vol 72 No 2Winter, |
| 2019: | Vol 72 No 3Spring, Vol 72 No 4Summer, Vol 73 No 1Fall, Vol 73 No 2Winter, |
| 2020: | Vol 73 No 3Spring, Vol 73 No 4Summer, Vol 74 No 1Fall, Vol 74 No 2Winter, |
| 2021: | Vol 74 No 3Spring, Vol 74 No 4Summer, Vol 75 No 1Fall, Vol 75 No 2Winter, |
| 2022: | Vol 75 No 3Spring, Vol 75 No 4Summer, Vol 76 No 1Fall, Vol 76 No 2Winter, |
| 2023: | Vol 76 No 3Spring, Summer, Fall, Winter, |
| 2024: | Spring, Summer, Fall, Winter, |
| 2025: | Spring, Summer, Fall, Winter, |
| 2026: | Spring, Vol 79 No 4 June, |
