Lewis Carroll (Sebastien quotes "The Hunting of the Snark.")
Sir Arthur Conan Doyle and by extension Sherlock Holmes (Sebastien quotes "The Curious Incident of the Dog in the Night-Time.") This leads me to believe that in this continuity, Holmes' character may be loosely based upon Sebastien.
Christopher Marlowe and Faust. (Sebastien, again with the quoting.)
Abraham Stoker, and Dracula.
Vlad III of Wallachia
Varney the Vampire
Alexandre Dumas pere
William Shakespeare (several references, although in this world he apparently wrote a play in which the central tragedy is the unnatural murder of a mother by her daughter.)
Things the world of New Amsterdam apparently does not have that Earth does.
Queen Victoria (but there is a cognate: Alexandria Victoria, the Iron Queen)
New York City
Joshua Norton, very sadly.
The United States of America
graphite pencil leads
Things the world of New Amsterdam apparently does have that Earth does not.
Gosselin, a vampire novel by Alexandre Dumas pere
Millarca von Karnstein, a real person.
Transatlantic dirigible service
Forensic sorcerers (a Crown Investigator or ein Zaubererdetektiv, depending on where you happen to be)
European settlements of North America limited to the coastlines
The Emperor of All Mexico
A Russian empire that is, apparently, all out of chewing gum.
Page 147 of 468. Still not King.
Man that's good bread. And this strawberry-kiwi tisane is really nice.