This is the first film series from Warner Bros. specifically aimed at the youth market. The studio hoped it would compete with MGM's highly successful "Andy Hardy" series. But, after the fourth and last "Nancy Drew" film, Nancy Drew and the Hidden Staircase (1939), Bonita Granville would move to MGM where she would play "Kay Wilson", Andy Hardy's college girlfriend in two films of that series: Andy Hardy's Blonde Trouble (1944) and Love Laughs at Andy Hardy (1946).
The third of four "Nancy Drew" films released by Warner Bros. from 1938 to 1939.
The crop-duster airplane used in the film is a Stearman C-3B, registration NC6491. 136 of this variant were built from 1927-29. MSRP was $8,970 (about $130,000 in 2018).
In the original theatrical release, Bonita Granville and Frankie Thomas appear in a short segment at the end of the film asking the audience to send fan mail to the studio and invite them to see the next film in the series.