The collection comprises:
- Volume containing loose items; tracings and sketches of watermarks. The items are undated and the sources for the tracings are not identified. The volume is marked 'Felix Oswald, 1883' (MS 165/1).
- Copy of an article entitled 'The Romance of Papermarks', by Harold Bayley and from an edition of 'The Bibliophile'. The date is unknown (MS 165/2).
There is no obvious connection between this small collection of material concerning watermarks and Oswald's academic career. It seems possible that his work on watermarks was a youthful enthusiasm.