Statistics for occurrence #1 of “Pettigrew, M. L.” in chapter 16 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Index:

... Pettigrew, M. L.
I., 177, 181, 197; II, 350; VI., 310; X., 44. IV., 313. III., 319; VI., 244,258; X., 321. VI...
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