housed should be determined in consultation with li- brarian or audio-visual coordinator at the school or county level. b. Storage space for roller-type maps. Provide one set of hooks so that a map can be unrolled for examination before it is checked out. c. Storage cabinet for recordings (See Appendix, Draw- ing 6.) d. At least two conveniently placed double electrical out- lets or electrical wire molding e. Darkening facilities and acoustical treatment, if used for previewing and listening E. Photographic Darkroom 1. Purposes and Activities a. Studying photography b. Producing graphic and photographic materials for classes and student publications 2. Space Allocation At least 100 square feet preferably a square room 3. Placement a. Readily accessible to all groups desiring to use it b. Adjacent to the department that is to assume respon- sibility for its use (This may be adjacent to the ma- terials center, the science department, the industrial arts department, or another related department.) 4. Equipment Consult references in bibliography and persons experi- enced in equipping and operating this facility. III. Suggested Layouts Sample plans have been included in the Appendix to sug- gest varieties of ways in which space may be used for particular shapes in the sizes and types of schools specified. For the twelve- grade schools a sample plan is suggested for a center occupying a modified rectangular space and serving a school enrollment of 500.