An essential ledger of the physics literature of its day, the International Catalogue of Scientific Literature: First Annual Issue (C Physics) collects the scholarly map of a discipline in motion. Practical, exhaustive and quietly indispensable. Part physics reference catalogue, part research bibliography, the volume organises international science publications into a scientific periodical index and a subject-by-subject physics subject index, with systematic headings and cross-references designed to point readers from abstract to full study. As a snapshot of early 20th century science, it reveals not only where ideas were published but how scholars communicated transnationally - journals, notes and short reports all register here in a diagnostic bibliography that aided contemporary scholarship and now aids historical enquiry. As a scientific literature collection it captures the vocabulary, debates and citation practices that shaped those formative years; librarians and academic researchers will recognise its practical value, and general readers with an interest in science history will find an unexpectedly vivid register of discovery. Republished by Alpha Editions in a careful modern edition, this volume preserves the spirit of the original while making it effortless to enjoy today - a heritage title prepared for readers and collectors alike. Beyond cataloguing, it functions as an essential academic researchers resource and a guide for library science collection development: a science history reference that charts the rise of specialisms, traces citation networks and makes historical scientific works discoverable. Casual readers curious about the provenance of ideas will find rewarding pathways through the record; classic-literature collectors and institutional archivists will value the volume as a scholarly physics anthology and a tangible witness to international science publications. Compact, methodical and historically resonant, this catalogue suits both careful research and the pleasure of browsing older scholarship. As reference and relic, it invites both quick consultation and sustained study. Collectors will appreciate the material sense of scientific history captured here; researchers can use the index to trace the genealogies of ideas and the circulation of results across borders.