Delve into the intricacies of grand pianos  with the "Reproducing Player Action Manual" by Simplex Player Action Co. This 30-page manual, predominantly for Grand Pianos, includes a valuable only section (pages 30-31) on the Upright Reproducing Player Piano "Figure 8" detailing the accessibility of all indicated parts. Despite its printing year being uncertain, this timeless resource is pivotal for piano technicians and enthusiasts alike. The digital download comes in a convenient 170.7 MB PDF zip format. Rely on Emanuel Rey Mobile Piano Builder ... for specialized music literature, supporting your passion for piano craftsmanship.