1. Imago Mundi MS 12-24 Reference (shelfmark): Imago Mundi MS 12-24 Title: Skelton papers Collection Area: Map Collections Languages: Dutch, English, French, German, Italian, and Spanish Date Range: 1939-1971 Extent: c 23 items
2. Imago Mundi MS 25-33 Reference (shelfmark): Imago Mundi MS 25-33 Title: Roukema papers Collection Area: Map Collections Languages: Dutch, English, French, German, Italian, Russian, and Spanish Date Range: 1957-1960 Extent: 9 items
3. Imago Mundi MS 34-46 Reference (shelfmark): Imago Mundi MS 34-46 Title: Koeman papers Collection Area: Map Collections Languages: Dutch, English, French, German, and Spanish Date Range: 1960-1974 Extent: c 23 items