Why do scholars believe that many of Henri de Toulouse-Lautrec’s paintings won’t

Question: Why do scholars believe that many of Henri de Toulouse-Lautrec’s paintings won’t last very long!?
Best Answer - Chosen by Asker:

His lithographic prints were produced on poster paper, which will probably degrade rapidly from the acid content in the paper!. His famous collection of posters were never intended to be museum pieces - now they must be kept away from the light and under strict atmospheric control!.

But don't take my word for it!.!.!.
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