By 1950 only 46% of the farms in the USA had electricity (History Channel), that would also mean that if you lived out in the country and away from town you did not have electricity either. So what did you use for light? Well are were candles, kerosene lamps, gasoline lamps, and gas lamps using bottled gas.  Candles do not give off much light, gasoline lamps are noisy and dangerous.  To install gas pipes for gas lights is not cheap. Aladdin Lamps use a mantle and kerosene for fuel, and provide enough light to read by, while being quiet. These Aladdin Lamps were widely used in the 1920s through the 1950s.