REMOVE

1. Boardinghouses -- Colorado

WHAT

1. Coal Strike, Colo., 1913- … (1)
2. Coal miners -- Children - … (1)
3. Coal miners -- Colorado - … (1)
4. Coal mines and mining (1)

WHERE

1. Ludlow, CO (1)
2. Maitland Mine, CO (1)
3. Pictou Mine, CO (1)

WHO

1. Pickett, Lottie (1)

WHEN

1. 1891/1976 (1)
2. 1976 (1)