A thorough inventory of research resources in American repositories, the Guide lists collections in the history of chemistry and chemical engineering, the chemical and pharmaceutical industries, and a number of related chemical process industries and businesses, from personal and professional papers of chemical scientists and engineers to business records of the chemical process industries.

This is one of the finest statewide sourcebooks ever published, a remarkable compilation of sources and resources that are available to help researchers find their Michigan ancestors. It identifies records on the state and regional level and then the county level, providing details of vital records, court and land records, military records, newspapers, and census records, as well as the holdings of the various societies and institutions whose resources and facilities support the special needs of the genealogist. County-by-county, it lists the names, addresses, websites, e-mail addresses, and hours of business of libraries, archives, genealogical and historical societies, courthouses, and other record repositories; describes their manuscripts and record collections; highlights their special holdings; and provides details regarding queries, searches, and restrictions on the use of their records.