Nearly all things within the pamphlet selection have information in LocatorPlus. Many of the pre-1801 and about fifty,000 nineteenth and twentieth century pamphlets usually do not still have documents in LocatorPlus. Lots of them are available by looking in the Index-Catalogue of the Library in the Surgeon-Common’s Place of work https://maps.app.goo.gl/4RRJnUstxVnoZ5sQ8