You can access the DeGolyer Collection at:

Articles and scientific papers on surface
geochemical exploration for petroleum

Papers in the collection are arranged as follows:

1 History of geochemical exploration [18 titles].
2 Short courses [2]
3 Statistical evaluation of anomalies[15].
4 Models for microseepage and related anomalies [24].
5 Multiple methods [55].
6 Onshore hydrocarbon detection [112].
7 Offshore hydrocarbon detection [26].
8 Radiometric methods [56].
9 Shallow magnetic anomalies [58].
10 Delta carbonate method [15].
11 Carbonate geomorphology [7].
12 Air-photo geomorphology [10].
13 Satellite imagery interpretation [17].
14 Radar methods [7].
15 Microbiological methods [28].
16 Botanical methods [4].
17 Botanical Indicator [6]
18 Fluorescent methods [9].
19 Iodine methods [6].
20 Helium methods [6].
21 Induced polarization [18].
22 Geothermal gradient methods [5].
23 Geochemical success and costs [11].
24 General studies [23].
25 Bibliographies [3].
26 Books, symposia and journals [22].
27 Writings of Martin J. Davidson [17]
28 Writings of Donald F. Saunders [26]