Question: Locomotives kept grand trunk lettering for service in the U.s on railroads such as this known as st-laurent et atlantique quebec? 
Sentence (from "Canadian National class O-19 0-6-0"): These USRA 0-6-0 locomotives were built for the Grand Trunk Railway (GT) in 1919 and remained in yard service until the final replacement of steam with diesel locomotives. ALCO builders numbers 60187 through 60191 were built at the Cooke plant as Grand Trunk Western Railroad numbers 1744 through 1748 while builders numbers 61298 through 61302 were built at the Schenectady, New York plant numbered 1824 through 1828 for use on New England lines.
Relevant evidence: No