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Source/Further reading:

The Call of Cthulhu: https://www.scribd.com/book/262694583

The Rub al-Khali:
https://www.britannica.com/place/Rub-...
https://scholarworks.uark.edu/cgi/vie...
https://books.google.co.uk/books?id=z...

Bibliography on Iram/Ubar on Scribd.com:
https://www.scribd.com/audiobook/4246...
https://www.scribd.com/book/165237893
https://www.scribd.com/book/87000691
https://www.scribd.com/book/220492077

Herodotus and Strabo: https://sourcebooks.fordham.edu/ancie...


Biblical mentions:
https://www.biblicalarchaeology.org/d...
http://www.christadelphianbooks.org/a...
https://www.biblestudytools.com/encyc...

Iram of the Pillars in the Quran and the Hadith:
http://corpus.quran.com/translation.j...
http://tvkmuslims.blogspot.com/2016/0...
https://www.al-islam.org/kamaaluddin-...
https://ahadith.co.uk/whatishadith.php

Iram in Arabic poetry and the Arabian Nights:
https://www.academia.edu/38695425/A_P...
https://www.scribd.com/document/87000...

Ibn Battuta:
http://tvkmuslims.blogspot.com/2016/0...
https://issuu.com/journalismstudiessq...

Philby and Thomas:
https://www.scribd.com/document/87000...
https://www.britannica.com/biography/...
https://www.ames.cam.ac.uk/faculty-li...

The expeditions of Clapp, Zarins and Fiennes:
https://www.independent.co.uk/news/uk...
http://www2.ups.edu/faculty/velez/FL3...
https://www.sidetracked.com/sir-ranul...
https://archive.nytimes.com/www.nytim...
https://www.nytimes.com/1992/04/21/sc...