The Frisco Archive has posted two digitized copies of the Frisco Employee Magazine, which as usual, shed some new light on Frisco operations. The shop force at the West Shops are well-known for the work it performed on the 3540’s, 182’s, 1060’s, 4300’s, 4400’s, and 1350’s as well as for the it work performed keeping the fleet maintained during major “Class” repairs. During the 1920’s the shop force was also working to improve fuel economy and to improve locomotive horsepower. Starting page 16, the Nov 1924 FEM details the work being performed on the little ten hundreds, the 1040’s, the 1400’s, the 1500’s, the Mallets, and the 4100’s. In this article, which is also a very nice primer about locomotive valve gear, describes the work being performed. The Frisco was lengthening the piston-valve stroke, changing the cut-off, and enlarging the steam ports all to improve locomotive performance. Lest we think work of this type was being performed solely in the West Shops, the Sept 1931 FEM on page 16 describes the rebuild-work performed by the KC Shop forces on 1061. The 1061 received new piston vales, lengthened travel, enlarged ports and many other improvements, both mechanical and cosmetic. Engine crews must have been pleased to learn that the Volatone horns were moved from the cab roof to the front of the smoke arch (read smoke box). The RFE considered the new rebuilt engine to be “almost as good” as a 1500. Both articles provide us new insights about the worked performed on Frisco steam that is not reflected on the locomotive diagrams or in other sources. Under my favorite heading, “It’s Always About the Geology”, the Sept 1931 issue on page 9 has an excellent article about the Tripoli industry in SWMO, and in particular at Seneca, MO. In short, Tripoli is weathered chert, and it is used as a polishing or cleaning grit and in its solid form as a filtering agent. I have attached a 1907 Bulletin, which discusses SWMO Tripoli further.