Box | Folder		Title
		Indexes - Historical Flow Chart (HFC) [subseries]:
20	29	HFC 1st line by date, undated
20	30	Index no. 8 to subject matter sets, undated
20	31	Master copy [diagram], undated
20	32	HFC/URBS - keyword search - family-genus series, undated
20	33	Special collection by subject matter sets, undated
20	34	Index in HFC number order - 4.1, undated
20	35	Output and involvement, undated
20	36-62	Master cards - 1A - 4H, undated
20	63	Condensed keyword selected bibliography - 5.1, 1981
20	64	Early version of 4.2, 1983
21	1	Ordered by HFC: full details - 4.2, 1985
21	2	By document type: full details - 2.2, 1984-1985
21	3	HFC index, 1985
21	4	Primary line: sorted by date, 1985
21	5	Document list generated by keyword search: "habitat", 1985
21	6	List of documents sorted by date, 1985
21	7	List of URBS documents and Miscellaneous documents by date, 1985
21	8	Special collection by subject matter, 1985