Alva-Line vellum tracing paper rolls and pads. Tracing vellum is a medium-weight 16 lb. basis vellum paper manufactured from 100% new cotton rag fibers with a non-fading blue-white tint. Finely-grained surface that is excellent for pencil and pen receptivity. 100 rag Alva-Line tracing paper advantages include: leave no ghosts, smudges, or smears when erasing; high tensile strength prevents tears; resists aging and yellowing. Tracing paper rolls, pads, and sheets available in a variety of popular sizes. Alvin #6855 100 rag vellum tracing papers.