substanceGround BlockedColors & materialsA named craft material / finish lemma (Ground Blocked) drawn as an exact public-domain workshop phrase.Ground Blocked is historically related to Iron.painters-decorators seats orphan ground-blocked beside iron 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.).