Canadian First Day and other Philatelic Covers by Joseph C. Rosenbaum is a collaborative effort by six long-time collectors of his covers who have joined together to present as nearly as possible a full catalogue of his work. Led by Gary Dickinson, each member of the group has contributed scans of his Rosenbaum covers beginning with early uncacheted envelopes, then proceeding through the JCR and Rosecraft cachets as well as his attempts to introduce new product lines. Joseph Rosenbaum was a stamp dealer in Montreal for three decades beginning in the mid-1930s. His cacheted first day covers were published continuously under the JCR label from 1947 to 1957, then as Rosecraft from 1957 until he sold the business in 1967. His FDCs set the standard for quality and acceptability for two decades, even to the point that they were used as replacement covers by the Canada Post Office. The handbook presents scans of all of Rosenbaum’s cacheted and uncacheted covers as well as a narrative describing and assessing them.