Since 1910, the Library of Congress (LC) has collected state publications and announced them in its Monthly Checklist. Over 26,000 titles were listed in 1973, but this does not represent a complete record of official state publications. If a state does not have a law requiring that a copy of each publication issued be sent to the LC, the coverage tends to be sparse. At times, the Checklist staff must locate and request publications individually. Not everything in the Checklist is retained by LC; only items of substantive content are integrated into the general collection. The Library of Congress needs state cooperation to improve the coverage of the Checklist. (PF)