ABSTRACT
Every environmental forensic investigation should start with historical document review. This is the first forensics tool (Bookspan et al., 2007) and consists of gathering and reviewing historical information related to a site, including any recorded environmental data. Usually, this step does not require help from historians; however, if such help is provided, the historian should closely work with the forensic scientist. This section includes information related to the main sources for historical documents along with guidance on what to look for and how to conduct efficient historical research.
