FWIW, I am not aware who, if anyone, maintained the database of US maps. I do know that the first maps I orienteered on were numbered, but not recent ones.
Also (posted this on the other thread too):
There's a database of mappers, on the OUSA site
. Not all are located in the US.
Mark Dominie of central New York should probably be added, but he has plenty of work (word of mouth) and has not requested to be added.
Anyone else who maps in the US and is willing to be added to the list can contact me at the email address in my profile.