Nearly All things inside the pamphlet assortment have information in LocatorPlus. Every one of the pre-1801 and about 50,000 19th and 20th century pamphlets usually do not but have information in LocatorPlus. A lot of them can be found by looking inside the Index-Catalogue of your Library from the Surgeon-Basic’s https://maps.app.goo.gl/4RRJnUstxVnoZ5sQ8