Caption: It was early in the morning when I visited the CN roundhouse area in London Ont. The area was enveloped in a heavy fog at the time. I was standing west of the roundhouse/yard office when I noticed some movement immediately south of the roundhouse. By pure luck I caught CN 2015 & CN 2031 dropping off a string of retired MLW yard engines. The MLW unites were CN 8221,8208,8232,8210,8219,8218,& 8229. They sat there for a few years, & I managed to photograph them more than once while visiting London my home town. If you grew up near Wellington & Bathurst Streets, rode the L&PS, you must be a rail fan!