No	Name	Flown By	Date Flown	Spacing	Dir	Altitude	LnMi	Datum	Publication
3088	South Powder River Basin	Geodata	07/75	0.75 mi.	N-S	400 AG	1055	IGRF65, +1000	OF77-621
4000	S.W. S. Dakota-E. Wyoming	Geodata	04/80-08/80	0.62 mi.	E-W	500 AG	6575	IGRF75	OF81-759
4019	Palisades	Geodata	02/81	0.5 mi.	E-W	1000 AG	1280	IGRF75	OF81-1161
4023	Sublette Range	Geodata	02/81	0.5 mi.	E-W	1000 AG	840	IGRF75	OF81-1163
4200	Yellowstone	Sander	07/97-090/97	0.25 mi.	E-W	800 AG	14340	IGRF95	OF00-163
5001	Gillette	GeoMet.	08/78	0.25 mi.	EW&NS	400 AG	810	IGRF75	GJBX-112(79)
5002	Arminto	GeoMet.	09/78	0.25 mi.	E-W	400 AG	1390	IGRF75	GJBX-113(79)
5029A	Copper Mountain	GeoMet.	08/77	1 mi.	E-W	400 AG	220	IGRF75	GJBX-201(82)
5029B	Copper Mountain Detail	GeoMet.	08/77	0.33 mi.	E-W	400 AG	190	IGRF75	GJBX-201(82)
5040	Sierra Madre/Medicine Bow	HighLife	09/79	0.25 mi.	N-S	400 AG	5956	IGRF75	GJBX-034(83)
6001	Wind River Basin	T.I.	05/74-06/74	2 mi.	E-W	400 AG	8378	?	GJO-1631-1

Description of Table

No.: Internal USGS identification number
Name: Internal project name (not always the name used in publication title)
Flown By: Company or government agency who flew the original survey
Spacing and Dir.: Primary flight-line spacing and primary flight-line direction
Altitude: Primary flight altitude in feet; B = barometric elevation, AG = above ground draped over topography
LnMi.: Approximate total of line miles flown for this survey
Datum: Indicates if a regional field was removed and, if it could be determined, the base value removed. Total field = no regional was removed. Arb. (arbitrary) datum = the base value removed was not stated on the map or in survey reports.
Publication: Brief publication reference*. USGS publications are listed as: Open-File reports = OFxx-yyyy where xx is the publication year, Bulletins and Professional Papers = B-yyyy or P-yyyy, Geophysical Maps = GP-yyyy, Miscellaneous Field Studies Maps = MF-yyyy, Miscellaneous Investigations Maps = I-yyyy.

*For a full reference for USGS publications see: http://library.usgs.gov/