This book covers the period April-September 1900. It contains an enumerated list, begun by Edison, regarding repairs and adjustments noticed during mill operations. The entries also pertain to the assignment of work to specific personnel. Other volumes [not selected] contain variant versions of the same material by authors other than Edison. Together, these volumes contain 4,437 entries. This book contains 200 numbered pages. Only the entries by Edison (pp. 3-31) have been reproduced. Some of the unselected material contains routine marginalia by Edison.