Seven studies of the ability of blind students (grades 4-12) to use tactile maps are reported in the last volume of a three-volume final report. The first study involving 36 blind students is explained to have suggested that line tracing and shape recognition skills differentiated good map readers from poor ones. The second study is reported to show that a frame of reference with specific instructions on how to search the display facilitated the performance of Ss in the lower grades, but interfered with or had no effect on Ss in the upper grades (total N=72). Described in the third study is the lack of effect of a frame of reference on the performance of 79 Ss who were asked to locate shapes on a tactile political pseudomap. Students in lower grades are reported in the fourth study to have benefited most from training in scanning a tactile display. The effects on map reading of training 92 blind students to use a distinctive features analysis strategy and line tracing are cited in the fifth study, while the sixth deals with the effects of noise on the location by 72 Ss of point symbols on a tactile pseudomap. The final study describes 72 braille readers' superior performance on a broad raised line map (shapes recessed) rather than a broad incised line map (shapes raised). (CL)