43 CFR 2.1 - What do the regulations cover?
(b) Definitions of terms used in Subparts A through I of this part are found at § 2.70.
(d) The Department's FOIA Handbook and its attachments contain detailed information about Department procedures for making FOIA requests and descriptions of the types of records maintained by different Department bureaus or offices. This resource is available at https://www.doi.gov/foia/news/guidance.
(g) Before you file a FOIA request, you are encouraged to review the Department's electronic FOIA libraries at http://www.doi.gov/foia/libraries. The material you seek may be immediately available electronically at no cost.