26. 'File 61/11 IV (D 77) Hejaz-Nejd, Miscellaneous' Date: 1930/1932 Language: English Geographic region: Yemen
27. 'File 61/11 V (D 95) Hejaz - Nejd, Miscellaneous' Date: 1932/1933 Language: English Geographic region: الاتحاد السوفيتيالولايات المتحدة الأمريكيةاليمنعسيرمكةالحجازجدةسيناء
28. 'File 61/11 VI (D 102) Hejaz-Nejd Miscellaneous' Date: 1931/1934 Language: English Geographic region: YemenʻAsīrHejazJeddah
29. 'File 61/11 VII (D 122) Hejaz-Nejd Miscellaneous' Date: 1934/1936 Language: English Geographic region: Soviet UnionYemenAl-Hasa
30. 'File 61/11 VIII (D 148) Nejd-Hejaz: Miscellaneous' Date: 1936/1939 Language: English Geographic region: YemenHejazPalestine
31. 'File 61/14 V (D 49) Nejd and 'Iraq, Relations between' Date: 1928/1928 Language: English Geographic region: AdenIraqKuwaitYemen
33. ‘Death of Sheik Hussain, Bedowin Chief’ Date: 1838/1838 Language: English Geographic region: Yemen
34. 'The Seven Independent Arabian States [Yemen, ‘Asir, Hijaz, Najd, Kuwait, Jabal Shammar and al-Jawf]' Creator: Author: William John Childs Date: 1935/1935 Language: English Geographic region: Nejd
35. 'Hadramaut. von Carl Zimmermann, Second Lieutenant im 24ten Jnfanterie Regiment, Berlin 1846 bei G. Reimer. (Zum Atlas von Vorder Asien gehörig)' Creator: Author: Karl RitterAuthor: Hermann Delius Date: 1846/1846 Language: German Geographic region: Jemen
36. 'Jemen. Versuch einer Darstellung vom glücklichen oder südöstlichen Arabien zu C. Ritters Erdkunde (Drittes Buch West Asien Band VI)' Creator: Author: Karl RitterAuthor: Hermann Delius Date: 1846/1846 Language: German Geographic region: Jemen