Subject

• Copies. Derivative objects. 5
• Plans (orthographic projections). 5
• Prints. Visual works. 5
• Sections. Orthographic projections. 5
• Maps. Cartographic materials. 4
• Plans. Maps. 4
• Plans (drawings). 3
• Sketches. 3
• Topographic surveys. 3
• Cross sections. 2
• Elevations. Orthographic projections. 2
• Manuscript maps. Maps. 2
• Marine charts. 2
• Reductions. Copies 2
• Stats. Copies. 2
• Working drawings. 2
• Carbon copies. Reprographic copies. 1
• Design drawings. 1
• Engravings. Prints. 1
• Graphs. 1
• Longitudinal sections. 1
• Manuscripts. 1
• Notes. 1
• Reports. 1
• Statistics. 1
• Surveys. Documents. 1