https://digital.sciencehistory.org/works/6lkg923/viewer/p5j6xl7
Indanthren Dyeings on Rayon (Viscose) Yarn - Science History Institute Digital Collections
Vibrant collection of Indanthren dyings on rayon hanks are included in this mid-20th century sample book published by the General Dyestuff Corporation....
science history institutedigital collectionsdyeingsrayonviscose