Nell (Ewing) Speed (1878-1913) was an American author. She wrote four books in the Molly Brown series: Molly Brown's Freshman Days (1912), Molly Brown's Sophomore Days (1912), Molly Brown's Junior Days (1912) and Molly Brown's Senior Days (1913). After her death the series was continued by her sister Emma (Keats) Speed Sampson (1868-1947) who wrote another four titles under the pseudonym Nell Speed: Molly Brown's Post- Graduate Days (1914), Molly Brown's Orchard Home (1915), Molly Brown of Kentucky (1917) and Molly Brown's College Friends (1921).