Lettering on scenery library objects

Nope, that doesn't ring a bell.

Just for posterity those signs were made by Dennis Waggoner who also made all those cool animated hangars with the "Tune Nav2 to X.XX for Attendant" signs on them, you'd tune the frequency and the hangar doors would open.

http://library.avsim.net/esearch.php?CatID=root&Name=&FileName=*dwag*.zip&Author=Dennis+Waggoner&DLID=&Sort=&ScanMode=0&Go=