http://pec.lib.wvu.edu/record/P200331972-1970Livestock report : hogs and pigs.<p> Serial. Printed Ephemera Collection has: 1972:June, 1973:June, 1974:June, 1974, 1975:June, 1975, 1976:June, 1976, 1969, 1970. Several inconsistencies in issue enumeration and chronology. Two issues dated June 1973, each with different release dates.</p>West Virginia Crop Reporting Service.Swine industry--West Virginia--Statistics--Periodicals.Swine industry--United States--Statistics--Periodicals.14256