- ArchiefMG 146 - W.O. Kupsch fonds
- ReeksJ. Audio-Visual Materials
- StukWOK 1-1 - Diagram of Oil seep on homocline
- StukWOK 1-2 - Map of oil and gas seeps in Middle East
- StukWOK 1-3 - Map of oil and gas fields in Middle East, after Landes
- StukWOK 1-4 - Map of bituminous surface deposits in the Middle East
- StukWOK 1-5 - Map of oil fields in Pakistan-India-Burma, after Landes
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