By the Light of the Study Lamp
 By the Light of the Study Lamp is the first book in The Dana Girls detective series originally produced by the Stratemeyer Syndicate. It was issued in 1934 as part of a three-volume release in order to test the market for the series.Louise and Jean Dana orphaned sisters receive the gift of an antique study lamp as a parcel from their Uncle Ned Dana skipper of the SS Balaska as they are packing to return to their school for a second year.