The primary indexes in Box 46 generally correspond to the arrangement of bookplates and act as useful guides to finding individual plates in the collection. However, these indexes are sometimes inconsistent with the physical collection at the item level. For instance, the "Illustrated" index lists both the owner and the engraver, and though the particular plate is indexed under "Illustrated," it will be filed in the collection under the series "Engravers of Bookplates." Lionel W. Rothschild is indexed under "Illustrated," yet his bookplate is boxed under Sherborn (in which index Rothschild is not listed). The same is found for several other "Illustrated" plates, which are boxed under the engraver. Conversely, Mrs. Theodore Roosevelt is indexed in "Illustrated" and though engraved by Sidney L. Smith, Mrs. Roosevelt is also boxed in "Illustrated." Such cross-indexing recurs in the collection, and requires the researcher to check multiple indexes and boxes before finding the physical location of a particular plate.
The J.W. Spenceley index is marked at the top in pencil, "not in Miss Toedteberg's list," which description may also apply to the indexes for all engravers' collections. The French index is pencil marked to note that Emma's bookplate has been added to the collection. The Sidney L. Smith index has been previously amended in pencil where the listings are out of alphabetical order. However, the bookplates in the boxes are alphabetized according to the pre-amended indexing order, which might suggest that the author of the original index also boxed the collection. Unlike the French collection, which indicates a post-Emma stage of processing, here the Smith box follows the original index.
Finally, many of the indexes show traces of having been updated. For example, some are marked in pencil to indicate mistakes in alphabetization, and some show typewritten amendations to the lists. A reference to the "unmarked green box" remains a mystery.
Box 48 contains bookplates and correspondence acquired by Harriet Stryker-Rodda, Long Island Historical Society librarian in the 1960s. Numerous unmounted and uncollected bookplates are included, as well as a one-page outline of the materials and a detailed index of the bookplates.