This document provides an overview of digital tools and resources for studying Sherlock Holmes's London, including visualizations, digital archives, mapping, and distant reading. It lists specific projects like the Rossetti Archive, Omeka, BookTraces, and word clouds and word trees made with different texts. Mapping tools and projects are highlighted, such as Virtually London, student maps of locations from Holmes stories, and interactive maps of works like The Picture of Dorian Gray and Romance of a Shop. Links to additional online resources for researching late 19th century London are also included.