See the Key System forward from 1945 and the end of WW II that brought the National City Lines buy-out. See the last 13 years of a great transit line that struggled to maintain quality service in a world of change. We review the NCL and compare its new control of the Key System to the LA Railway and others. See the last few years of the Key's subsidiary streetcar lines that were all ripped out after 1948. Watch the stunning B Line trains around Lake Merritt and on up to Underhill. The C Line to Piedmont and Oakland Avenue offers the beauty of the East Bay. Visit and ride through the Bridge Yard and recall the Keys great fleet of Bridge Units connecting the greater East Bay with San Francisco. Run through the Emeryville Yard and watch trains spill past Tower Two. See great trains in a wealth of locations in a bygone era on all the Bridge Lines A through F. Don't miss the action with freight trains down 40th Street from Sacramento Northerns connection to the C Line and the Oakland Terminal Railway. The F Lines City Of Berkeleys Key train of former SN Ry cars is just one of the delights to see on the Berkeley Line.