The Naval Postgraduate School's Dudley Knox Library (DKL) maintains a curated portfolio of information products from a variety of credible and proprietary sources supporting teaching, learning, and research needs of NPS students and faculty. Selection is based on relevance to curricula and research interest, the quality of content, and some technical delivery preferences. The annual subscription to the Knovel eBook Collections provides current engineering data and technical references in these broad subject areas: Aerospace & Defense, Oil & Gas, Chemicals, Engineering Design & Construction, Education & Research, and Equipment Manufacturing. It supports instruction and research primarily in the GSEAS and GSOIS departments.The period of performance is for a base period of two (2) months and four (4) option periods of a 12 month subscription.