(This site is no longer functioning.)
The complete run of Baker Street Collecting is available. The original copies are of low quality, so the scanned images are not very clear. But these are the best that is available. These issues were reproduced using a spirit duplicator (sometimes called a "ditto" machine). This was a device that transfers purple ink from a spirit master onto sheets of paper that have been lightly brushed with spirits. Such machines could make only a limited number of copies. However, the number could be stretched out by making faint copies, as is seen here.