Company Records Series -- New Jersey and Pennsylvania Concentrating Works -- Plant Operations Records -- Standard-Size Notebooks :: N-92-04-22 (1892)
This notebook covers the period April 1892 and possibly July 1892. It was used by Walter S. Mallory and Edison for notes regarding screening tests. The spine is labeled "132." The book contains 35 numbered pages, some of which are blank. Two loose pages have been inserted into the book.