48 CFR 53.107 - Obtaining forms.
(a) Executive agencies shall obtain standard and optional forms from the General Services Administration (GSA) by using GSA Supply Catalog - Office Products (see 41 CFR 101-26.302). Standard forms adapted for computer preparation (see 53.105) or with special construction and printing (see 53.106) that are not available from GSA may be ordered directly from the Government Printing Office (GPO).
(b) Contractors and other parties may obtain standard and optional forms from the Superintendent of Documents, GPO, Washington, DC 20402. Standard and optional forms not available from the Superintendent of Documents may be obtained from the prescribing agency.
(c) Agency forms may be obtained from the prescribing agency.