see Burrowes, Robert D. (Winter 2005). "The Famous Forty and Their Companions: North Yemen's First-Generation Modernists and Educational Emigrants". Middle East Journal. 59 (1): 81–97. doi:10.3751/59.1.15. JSTOR4330098. – via JSTOR(subscription required)
see Burrowes, Robert D. (Winter 2005). "The Famous Forty and Their Companions: North Yemen's First-Generation Modernists and Educational Emigrants". Middle East Journal. 59 (1): 81–97. doi:10.3751/59.1.15. JSTOR4330098. – via JSTOR(subscription required)
Bat-Zion Eraqi Korman, "Yemeni Jews En Route to Palestine by Way of Aden during the Mandate Period 1920–1948", in: Ascending the Palm Tree – An Anthology of the Yemenite Jewish Heritage, Rachel Yedid & Danny Bar-Maoz (ed.), E'ele BeTamar: Rehovot 2018, p. 309 OCLC1041776317
Bat-Zion Eraqi Korman, "Yemeni Jews En Route to Palestine by Way of Aden during the Mandate Period 1920–1948", in: Ascending the Palm Tree – An Anthology of the Yemenite Jewish Heritage, Rachel Yedid & Danny Bar-Maoz (ed.), E'ele BeTamar: Rehovot 2018, pp. 310–313 OCLC1041776317
Rathjens, Carl (1957). Jewish Domestic Architecture in San'a, Yemen. Jerusalem: The Israel Oriental Society, affiliate of the Hebrew University. p. 14. OCLC48323774.; as early as 1761, Yemeni Imam el-Mahdi el-Abbas (1748–1775) ordered that the Jews in Sana'a lower their houses to a maximum height of 14 cubits (nine metres)
