FREE AND INEXPENSIVE MATERIALS FOR USE IN CONSERVATION EDUCATION WERE EVALUATED. THE OBJECTIVES OF THE PROJECT WERE TO DETERMINE (1) THE KINDS OF FREE AND INEXPENSIVE CONSERVATION MATERIALS WHICH MAY BE NEEDED, (2) THE KINDS THAT ARE BEING PRODUCED, (3) THE QUANTITY PRODUCED, AND (4) THE AGGREGATE EXPENDITURES FOR PRODUCTION. EFFORTS WERE MADE TO ANALYZE THE CHARACTERISTICS OF EXTANT MATERIALS, DETERMINE TEACHER AWARENESS OF CONSERVATION MATERIALS, AND RECOMMEND TO THE PRODUCERS OF MATERIALS WAYS OF INCREASING THE EFFICIENCY OF THEIR EFFORTS. MATERIALS FOR ANALYSIS WERE RANDOMLY SELECTED FROM 7,524 TITLES RECEIVED. THREE SETS OF JUDGES--EDUCATORS, CONSERVATIONISTS, AND CLASSROOM TEACHERS--EVALUATED THE 1,541 PIECES IN THE SAMPLE. A STRATIFIED RANDOM SAMPLE COMPRISING ABOUT THREE PER CENT OF THE TEACHERS IN MINNESOTA, MISSOURI, AND OHIO WAS USED IN DETERMINING TEACHER AWARENESS OF CONSERVATION MATERIALS. BOTH NATIONAL-LEVEL MATERIALS AND STATE-LEVEL MATERIALS FOR EACH OF THE TESTED STATES WERE USED IN THE ASSESSMENT. THE DATA RESULTED IN 60 CONCLUSIONS ABOUT THE MATERIALS INCLUDING SUCH AREAS AS (1) QUANTITY OF EXTANT MATERIALS, (2) PRODUCERS OF MATERIALS, (3) TARGET GROUPS FOR MATERIALS, (4) READABILITY, (5) TOPICS COVERED, (6) COST OF PRODUCTION, (7) TEACHER AWARENESS, AND (8) SUGGESTED IMPROVEMENTS FOR PRODUCERS. A COMPLETE LIST OF THE PRODUCERS OF MATERIALS USED IN THE PROJECT IS APPENDED. (DS)