Four ninth plate thermoplastic cases, one configured as a double, house a mixed group of tintypes and ambrotypes dating to the 1850s and 1860s. The exterior covers display four distinct high-relief molded designs: a harvest still life with corn, wheat sheaves, and a beehive with garden tools, an oak leaf and acorn quatrefoil, a beehive and agricultural implements within an octagonal cartouche, and a figural composition showing a seated woman with a child set within a beaded oval surrounded by rococo scrollwork. The fourth and largest case features a geometric lattice pattern with a central diamond and concentric ring medallion on its reverse.

Inside, subjects include a seated man leaning on a table with papers, a seated woman in a dark patterned dress with a full skirt, a male bust portrait with a bow tie and hand placed to chest, and the double case holding two oval portraits of women in bonnets, each set in gilt brass mats with embossed foliate borders against crimson and magenta velvet pads.

Thermoplastic union cases of this type were manufactured primarily in the United States during the 1850s through the 1870s, with major producers including Samuel Peck and Company of New Haven and the Littlefield, Parsons and Company of Florence, Massachusetts. The harvest and beehive motifs were among the most popular decorative programs, reflecting mid-century agrarian and industry symbolism.

Property of a Palmer, Massachusetts gentleman.