Folklore americano.

no.1-2; no.3-5; no.6-9; no.10-13; no.14-15; no.16; no.20 1875; no.5 1957; no.6-7 1958-1959; no.8-9 1960-1961; no.10 1962; no.16 1969-1970; no.17 1971-1972; no.18-19 1974-1975; no.21 1976; no.22-23 1976-1977; no.24 1977; no.25 1978; no.26 1978; no.27-28 1979; no.29 1980; no.30 1980; no.31 1981; no.32 1981; no.33-24 1982; no.35 1983; no.36 1983; no.37-38 1984; no.35-39 (1983-85); no.39 1985; no.40 1985; no.41-42 1986; no.43 1987; no.44 1987; no.45 1988; no.46 1988; no.47 1989; no.48 1989; no.49 1990; no.50 1990; no.51 1991; no.52 1991; no.53 1992; no.54 1992; no.55 1993; no.56 1993; no.57 1994; no.58 1994-1997; no.59 1998