Native American Affairs Correspondence (1844) (in progress)

De-silk, wash with phytates

Before Treatment

Recto, spectral light	Verso, spectral light	Recto, raking light
Verso, raking light	Transmitted light

During Treatment

After Treatment

Recto, spectral light	Verso, spectral light	Recto, raking light
Verso, raking light	Transmitted light