[Jimmie Arroyo]

Wondering if anyone can help me here. At the Rubens show at the Met, I noticed that the drawings were not partially covered by mats, they looked like they were floating above the back support and all the edges of the paper were visible.

I also saw something similar at the da Vinci show. I remember seeing a drawing suspended by thread. A piece of thread was attached to each corner so it didn't touch the support or mat. I don't think I saw any thread at the Rubens or they were better camouflaged.

Any help will be appreciated.