Subject

• Copies. Derivative objects. 2
• Manuscript maps. Maps. 2
• Maps. Cartographic materials. 2
• Photographs. 2
• Plans (drawings). 2
• Sketches. 2
• Topographic surveys. 2
• Working drawings. 2
• Carbon copies. Reprographic copies. 1
• Cross sections. 1
• Elevations. Orthographic projections. 1
• Engravings. Prints. 1
• Longitudinal sections. 1
• Manuscripts. 1
• Reductions. Copies 1
• Reports. 1
• Stats. Copies. 1
• Surveys. Documents. 1