The name "Robert Randolph Inman" is undoubtedly a pseudonym, as are most of the names which first appeared in the Popular Library, that last attempt of Beadle between April 1, 1891, and February 24, 1892, at publishing a new series in an effort to put new life into a †moribund business. Most of the real names of the authors of the stories in this series are known, but five still remain undetermined. Among these is Robert Randolph Inman, who first appeared in the Beadle publications as the author of nine issues of this "library." These stories were later reprinted in the Half-Dime Library. The name Inman possibly belonged to William H. Manning, T. C. Harbaugh, or Prentiss Ingraham, rather than to a new writer, for Beadle and Adams at that time were not taking on any new men. Since Inman's true name is unknown, his novels, until further evidence is uncovered, are listed below under the pseudonym.

Popular Library. Nos. 1, 4, 10, 16, 22, 28, 34, 40, 46
Half-Dime Library. Nos. 1024, 1036, 1064, 1071, 1081, 1086, 1092, 1096, 1100

† Correction made as per Volume 3.