This file contains a loose-leaf sheet with a stratigraphy diagram printed on one side, and two brief artifact sketches of pottery from the Professor Serizawa Collection (JA1:36 and JA1:37) on the other. On the stratigraphy diagram, there is no archaeological site specified or further context provided. For the artifact sketches, there is accompanying handwritten information such as time period, pottery vessel type, and location of discovery. Also written down are the same details for several other sherds in the collection (JA1:38, JA1:39, JA1:40), but there are no corresponding graphics. This text is in both Japanese and English.

The stratigraphy diagram and artifact sketches bear no immediate connection to one another, and no date is given for either. It is possible that the stratigraphy diagram was merely scrap paper for sketching artifacts on the back, but this cannot be said for certain.