lower left in graphite: Black Magic (New York 1929); lower right in graphite: Gerald K. Geerlings; upper left verso in graphite by unknown hand: $750; lower left verso in graphite by unknown hand: 79
(Mary Ryan Gallery, NY); Reba and Dave Wiliams, Greenwich, CT, 1992; gift to NGA, 2008
- Czestochowski, Joseph S. Gerald K. Geerlings. Cedar Rapids Art Association: 1984, no. 6d.