A collection of letters, reports, maps & lists of interest parties: these are filed from August back to February. Examples are: a letter (8/30) from Brig. Gen. Arthur H. Frye, Jr. (Division Engineer, South Pacific Div., Corps of Engineers) to Wilson and attached information (9/9) re/ “Notice of Report for Flood Control on Tahquiz Creek, Whitewater River Basin, California,” map & list of interested parties; a letter (4/5) from Col. Earl G. Peacock (Dist. Engineer, Corps of Engineers, Los Angeles) to Wilson & copy of “Notice of Initiation of Investigation” re/ San Luis Rey River Basin review report on survey for water resources development, foldout map & list of interested parties; a letter (4/1) from Col. Robert W. Fritz (Asst. Dir. of Civil Works for Southwestern Divisions, Dept. of the Army) to Wilson and reports to the Secretary of the Army & the Board of Engineers for Rivers and Harbors regarding the Santa Margarita River and Tributaries; 2 copies of a letter (2/12) from Brig. Gen. Arthur H. Frye, Jr. (Div. Engineer, South Pacific Div., Corps of Engineers) to Wilson and “enclosed advance information . . . of a public notice that will be issued by this office on 19 February 1963, together with a copy of a mailing list of persons” re/ “Flood Control on Santa Margarita River and Tributaries,” “Index Map” & “List of Interested Parties.”