Byron-Jackson disc bit & reamer disc bit, Southern California, 1929

2 photographs of disc bit and reamer disc bit, Southern California, 1929. "Subject: #1 - B[yron] J[ackson] disc bit, #2- " " reamer disc bit

192913101DW19290926131DW1929092613101Oil wells Equipment and suppliesByronJacksonMcCartyJoeGraur