This volume collects the papers originally presented at the workshop Building New Resources for Historical Linguistics, held at the University of Pavia in November 2020. The purpose of this workshop was to provide an opportunity for researchers engaged in the development of linguistic resources for historical linguistics to share their experience and knowledge. Sharing is crucial in computational linguistics in order to avoid multiplying efforts and encourage the use of compatible tools, formats, and formalisms to increase the interoperability. Reflecting the purpose of the original workshop, this book introduces the reader to different projects aimed at creating, developing and linking linguistic resources for historical linguistics. While some of the papers in the volume describe mature resources and discuss their possible application, others introduce resources that are still in progress, presenting their aims, the challenges faced in their construction, and the methodologies employed to tackle them. The different types of resources described in the volume include syntactically annotated corpora (treebanks), dependency lexica, as well as lexical and typological databases. Furthermore, some of the papers are concerned with the thriving field of Linguistic Linked Open Data, the current up-to-date standard to link linguistic resources.