SPecia CATALOGS, COMMERCIAL--MASSACHUSETTS--BOSTON.
COLLECTIONS Ritchie (Edward S.) & Sons, Boston. SCH Ritchie's illustrated catalogue of philo- . T860 sophical instruments, and school apparatus. -R51I Boston CA.Holland, 18601 x, 84p.inel.front.,illus. 23.5em.
FOR OTHER EDI TIONS see AUTHOR
1. Physical instruments--Catalogs. 2. Catalogs, Commercial--Massachusetts-—-Boston.
| & MB-Rev. (2)