Scope and Contents This is an 120 GB external hard drive containing 391 folders of Arbib's materials; many of the le.folders have many more folders and files nestled inside. The types and topics of materials are similar to those of Arbib's paper files, although there are many which cover the later years (to 2016) which are sparse in the paper files. It is unknown which dates reflect the earliest documents, since the dates of the folders are those of the creation of the electronic versions. Use of the hard...