AME provides valuable resources such as:
FWS1 - The Fillet-Welded Staybolt Introduction
FWS2 - Staybolts, Firebox and Boiler
FWS3 - Mathematical-Graphic Method for Calculation of Rigid Staybolts
FWS4 - Measurements of the Stretch of the Differeent Types of Staybolts
FWS5 - Staybolt Data
Locomotive Boiler Scale Tests