Correct Drawing of House Occupied by the President in 1841 (1861)
C.G. von Iwonski, inscription by Sam Houston

De-frame; reverse tape and adhesive; dry clean; wash & deacidify; light bleach; mend; mat

Before Treatment

Framed drawing recto	Framed drawing verso	Tears
	Artist & Houston's signatures; staining & mat lines

During Treatment

Frame, backing paper removed	Item on backing board removed from frame	Removing mucilage
Removing paper tape	Dry cleaning	Pre-aqueous treatment & bleaching

Pre-aqueous treatment & bleaching, inscription & stain	Pre-aqueous treatment & bleaching, brown wash detail	Pre-aqueous treatment & bleaching, tear & mat lines
Washing & deacidifying	Light masking for iron gall ink	Bleaching with UV film & ink masking

After Treatment

Matted drawing	Matted drawing	Detail
Window mat lifted	Stain reduced	Enhanced contrast on brown wash
Edge discoloration reduced	Edge discoloration reduced