The Vast majority of items within the pamphlet assortment have data in LocatorPlus. All of the pre-1801 and about fifty,000 19th and twentieth century pamphlets will not yet have data in LocatorPlus. A lot of them can be found by looking while in the Index-Catalogue on the Library from the https://maps.app.goo.gl/4RRJnUstxVnoZ5sQ8