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    • Penn Central freight train accident

    • Penn Central Transportation Co.; Railroads; Transportation; Accidents; Railroad travel; Railroad tracks; Cuyahoga River; Bridges; Drawbridges;Bridge No. 1;Bridge Number One Vertical Lift Bridge (Cleveland, Ohio)
    • On May 8, 1974, Penn Central freight train OV-8 collided with the counterweight of a lift-span drawbridge on the Cuyahoga River at Cleveland, Ohio. Shortly before the collision, the eastbound train had been traveling at 33 mph on a main track...
    • School Gardengram lesson unit no. 6, "How can we judge the quality of our garden soil?"

    • School gardens; Cleveland Public Schools Horticulture Program; Gardening; Agriculture; Laboratory schools; School children; Local foods; Urban agriculture; Lesson plans; Teacher Education; Teaching--Aids and devices; Soil conservation; Ecology;...
    • "School Gardengram, Published by National Garden Institute, a Division Friends of the Land, 1368 N. High St., Columbus, 0; Volume I, Number 8, December, 1950. "How can we judge the quality of our garden soil?" includes definition of soil, types of...

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