Encyclopedia of associations.

Most recent edition kept in Reference at HS17. G34; 3rd ed., v.1-2 (1961); 4th ed., v.1-2 (1964); 5th ed., v.1-2 (1968); 6th ed., v.1-3, no.8 (1970/1971); 7th ed., v.1-3, no.4 (1972/1973); 8th ed., v.1-3, no.5 (1973/1974); 9th ed., v.1-3, no.2, v.3, no.4 (1975); 10th ed., v.1-3, no.2 (1976); 11th ed., v.1-3, no.3 (1977); 12th ed., v.1-3, no.3 (1978); 13th ed., v.1-2 (1979); 14th ed., v.1-3, no.3 (1980); 15th ed., v.1-3, no.2 (1980/1981); 16th ed., v.1-3, no.2 (1982); 17th ed., v.1-3, no.2, v.5, no.1-2 (1983); 18th ed. v.1-3, no.2 (1984); 19th ed., v.1-3, no.2, v.4 (1985); 20th ed., v.1-3, no.2, v.4 (1986); 21st ed., v.1-2, 3, no.1 (2 pts.), no.2, v.4 (1987); 22nd ed., v.1-4 (1988); 23rd ed. v.1-2 (2pts.), v.3 (1989); 24th ed., v.1-3 (1990); 25th ed., v.1-3 (1991); 26th ed., v.1-3 (1992); 27th ed., v.1-3 (1993); 28th ed., v.1-3 (1994); 29th ed., v.1-3 (1995); 30th ed., v.1-3 (1996); 31st ed., v.1-3 (1996); 32nd ed., v.1-3 (1997); 33rd ed., v.1-2 (1998); 34th ed.-45th ed. (v.1-2); 34th ed.-45th ed. (v.3, supplement)