substanceMarble GroundColors & materialsA named craft material / finish lemma (Marble Ground) drawn as an exact public-domain workshop phrase.Marble Ground is historically related to Clay.painters-decorators seats orphan marble-ground beside clay as a first craft peer — object speech, not a text-container or tradition dump.from An Old Hand · Hints for Painters, Decorators, and Paper-Hangers, PD Gutenberg #68866historically related to · sourced · documentedsourcesHints for Painters, Decorators, and Paper-Hangers · An Old HandAn Old Hand, Hints for Painters… (PD Gutenberg ed.).