war 138Sergeant Nicholas G. Wilson of Co. G, 138th Pennsylvania Infantry Regiment. From the Liljenquist Family Collection of Civil War Photographs, Prints and Photographs Division, Library ofThe 138 nib - whether gold, palladium, or steel alloy - was a size 245, which is smaller than the larger 250 size found on the 139. Most 138s are found with steel alloy nibs because they were