Tbilisi, Baku, Malta or Yerevan?
Numismatourist Howard Berlin writes:

To read the earlier E-Sylum article, see:
SHARJAH MUSEUM OF ISLAMIC CIVILIZATION (https://www.coinbooks.org/v23/esylum_v23n09a21.html)

Swan Collection of Medals of Railways
David Pickup writes:

To read the earlier E-Sylum article, see:
NOTES FROM E-SYLUM READERS: MARCH 1, 2020 : Books on Railroad Medals (https://www.coinbooks.org/v23/esylum_v23n09a10.html)

The Walls Are Covered In Maps
Michael Marotta writes:

I grew up in a rare book shop. My dad is a rare book dealer, and rare book men, if there's any space with no shelves, the walls are covered in maps. And so my exposure to maps was not fromknowing their history, but it was from getting a sort of osmosis effect of just their beauty and their intrigue. ... In terms of research, I thought the best thing to do was not just go to publiclibraries, the British Library, the great institutions, because that's where everyone goes for their images and their stories. So I split it between going to museums and libraries, but alsotalking to a lot of dealers who have this magpie's eye for a great story, and they know how to sell you a map with just a few words. That's a very attractive sort of philosophy for writingbooks as well.

To read the complete article, see:
Star maps through the ages: A Q&A with the author of 'The Sky Atlas'(https://www.space.com/sky-atlas-history-celestial-maps-book-interview.html)