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covered. (It is a Texaco Illinois map.) O-3868-4 The 0 indicates either a 1950 or 1960 printing (in this case it is clearly 1950 based on the map), the 38 shows that the base map was drawn in 1938, the 68 cannot be 1968 and so must be a code for the area, and the 4 indicates 4 updates to the base from 1938 to 1950. (It is Buffalo-Niagara Falls for Gulf.) Now to all this may be added a letter N, S, E, W, or even V for North, South, etc. when only a portion of the base is used. The V stands for a Velox print (?I. One more. 3-58463OV-5 The 3 is either 1953 or 1963 (map has a 1963 copyright statement!), 58 for a 1958 base map, 46 for either first map in 1946 or a code for the area, 30 for 30 printings since 1958 for various companies and years, V for Velox, and 5 for 5 editions (updates) between 1958 and 1963. '(Texaco map of St. Petersburg.) A - 1919 B- 1920 C- 1921 D- 1922 E- 1923 F- 1924 G- 1925 H- 1926 I- 1927 J- 1928 K - 1929 u - 1939 L- 1930 v - 1940 tl- 1931 w - 1941 N- 1932 x - 1942 O- .1933 Y - 1943 P- 1934 z - 1944 Q- 1935 R- 1936 S- 1937 T- 1938 H.M. Gousha Map Date Codes O- 1950,196O 66 - 1966 l- 1951,196l xx - from 66 on, 2- 1952,1962 last two 3- 1953,1963 digits of 4- 1954,1964 year. 5- 1945,1955,1965 6- 1946,1956 7- 1947,1957 8- 1948,1958 9- 1949,1959 The H.M. Gousha Company was founded in 1926 in Chicago by former employees of Rand McNally and like Rand, they used a hidden date. While some of their maps are dated in the legend or even on the cover, many Gousha maps do not contain an obvious date. The code used is one or two letters in a bottom map margin, generally with a series of digits and even another letter. The digits are not relevant to the date, they indicate the map masters for a filing system. The older the map, the fewer the digits, if any at all. If two groups of letters appear in the series, check both and use the one which makes most sense based on the map. Occasionally, a map code may indicate different dates on each side of the map or with a particular inset. In this case the map is classified by the newest such date. Letter A was assigned to 1927, B to 1928 and so forth through Z in 1952. Then AA for 1953, BB for 1954 and so forth through ZZ in 1978. At this point the code gets confusing, refer to the table below. A- 1927 M - 1939 B- 1928 N - 1940 C - 1929. 0 - 1941 D - 1930 P - 1942 E- 1931 Q - 1943 F- 1932 R - 1944 G- 1933 s - 1945 H - 1934 T - 1946 I - 1935 u - 1947 3 - 1936' V - 1948 K- 1937 w - 1949 L- 1938 x - 1950 Y- 1951 z - 1952 AA - 1953 BB - 1954 cc - 1955 DD - 1956 EE - 1957 FF - 1958 GG - 1959 HH - 1960 II - 1961 JJ - 1962 KK - 1963 LL - 1964 MM - 1965 NN - 1966 00 - 1967 PP - 1968 QQ - 1969 RR - 1970 ss - 1971 TT - 1972 uu - 1973 vu - 1974 ww - 1975 QD - 1987 xx - 1976 WJ - 1988 YY - 1977 ER - 1989 zz - 1978 IV - 1990 AB - 1979 SF - 1991 AC - 1980 UH - 1992 AN - 1981 GT - 1993 HZ - 1982 OB - 1983 YL - 1984 CP - 1985 KX - 1986 All maps published after 1987 have the edition year on the copyriqht statement.
General Drafting Date Codes General Drafting has not used a date code in the sense of Rand or Gousha. If any problem exists with GD it is that they use too many dates! The exception is some maps from the 1920's are completely undated and can only be dated by comparing with maps of known date. If a date is shown on the cover or in the legend, then that is the date to use. When two dates are given, such as 1955-1956 or 1970-71, then always use the first year. Many maps also have a copyright date which is frequently one year earlier than the legend date, in this case use the legend date. However, if the copyright date is the only date, there is no other date in the legend, then use the copyright date (this is particularly true since 19791. In the 1960's, the legend frequently contained a month in addition to the year. In these cases, for January through august, use the year given; but for September through December, use the next year. This is basically the system GD uses and it will result in common cover designs being called the same year. (This applies to the years 1962 - 1966 in the detailed map listings.). Due to reprintings, it is possible for the same map to exist as 1970 and 1970-71, and similarly for other years. These are not listed as separate dates but, in this example, only as 1970. Since the 1940's, most GD maps contain three or four small digits plus a letter in the margin or on the back cover. This is the month and year of'printing and should not be used to dafe the map unless nothing else exists. These change for each reprinting. The letter indicates the printing company. The only one known for sure is W for Western Publishing and Printing Co. fill of the above explains how to determine the date on which the map was issued. But since about 1958, GD has used a code to date the masters from which the map was created. This date is coded as a small-A' plus a number in a bottom corner of a map. Th i s number indicates the year the base map was first drafted. It is not updated unless the base is redrawn. Al was for 1953. The following table is for quick reference, but IS NOT THE DATE THE MAP WAS ISSUED.’ Al - 1953 A7 - 1959 A2 - 1954 A8 - 1960 A3 - 1955 A9 - 1961 A4 - 1956 Al0 - 1962 A5 - 1957 All 4 1963 A6 - 1958 Al2 - 1964 Al3 - 1965 Al9 - 1971 A25 - 1977 Al4 - 1966 A20 - 1972 A26 - 1978 Al5 - 1967 A21 - 1973 A27 - 1979 Al6 - 1968 A22 - 1974 A28 - 1980 Al7 - 1969 A23 - 1975 A29 - 1981 Al8 - 1970 A24 - 1976 A30 - 1982 Geographers A-Z Hap Company (Code Is located in or near the border at one corner of maps. Atlases are coded differently. Send a photocopy of the title page to the company and they will provide accurate dates). J I H G F E D C B A 1 . 2 3 4 5 6 7 8 9 0 “FDC” is “578” or May, 1978. Information courtesy of Peter L. Stark, with additions from Mark A. Bozanich, and Velma Parker.
Page 1 and 2: Handouts: Resources Scale Projectio
Page 3 and 4: ative Fractions 1. 1: 600 (“large
Page 5 and 6: Scale, p. 3 10. Scale not given Use
Page 7 and 8: PROJECTIO1V refers to the system us
Page 9 and 10: Scale Exercises, p. 2 9. 3o” 32O
Page 11 and 12: Major Differences between Book and
Page 13 and 14: III. Main entry A. B. C. D. IV. Tit
Page 15: H o w to Date a R o a d Map Most ma
Page 19 and 20: Scale Exercises Answers, p. 2 6. 03
Page 21: NO HOLDINGS IN WAU - 3 OTHER HOLDIN

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