Cards of Receipt addressed to Unknown Addressees, range of dates impossible to calculate, no date

Series I includes letters received by Eloise Cram, Maurice Hall, Albert Hassall, Louis Olivier, Brayton Ransom, Daniel Salmon, and Charles Stiles. Arranged first by condition of document (sheathed in plastic or unsheathed), then, if unsheathed, first alphabetically by recepient and then chronologically by date of composition. If sheathed, arranged first by size of material, then by date. Cards of Receipt received by these individuals and/or unknown persons. Arranged by same methodology as letters.