1. 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
2. Imago Mundi MS 30 Reference (shelfmark): Imago Mundi MS 30 Title: Imago Mundi. Current Correspondence.' Scope & Content: Language(s): In Dutch, French, German, Italian and Russian. Collection Area: Map Collections Languages: Dutch, French, German, Italian, and Russian Date Range: 1958-1960 Extent: 1 original bundle in file cover