While both publications do not specifically state that mold begins to grow in 24 to 48 hours, this is the generally accepted time frame used by water damage responders to determine when mold begins to grow. So we have the inference from the guidance documents that mold can begin to grow in 24 to 48 hours.
Granulated and softer drawing implements, such as chalk, charcoal, and graphite are not as dependent on a particular type of paper (as, watercolours, pastels or pen and ink); but, because of their slight adhesiveness, they often need a stronger bond with the foundation as well as some kind of surface protection.
Tracing paper comes in different kinds in thickness and sizes for use on a choice of surface. Tracing paper will be placed between the image to be transferred and the surface it would transfer to. This surface could be paper, wood, plastic, glass or fabric, etc.