Bradshaw's Monthly Railway and Steam Navigation Guide… (1843)
“ From Renfrew at 1⁄4 before every hour, beginning at 1⁄4 before 7 a.m. and ending at 1⁄4 before 6 p.m. WINTER HOURS ARE From Paisley 61⁄4 a.m. and every hour from 1⁄4 past 8 a.m. until 1⁄4 past 6.pm. ”
