It has been called to our attention that some of our subscribers object to duplicating, or at least object to paying for duplicating plates or photographs which they already have in some other form. This is of course perfectly natural and was a point which we had fully in mind in formulating the plan of THE BROCHURE SERIES. And this was one of the main considerations which influenced us in making the subscription price so low. At the price of fifty cents a year, if only a dozen out of the hundred plates are worth buying to a subscriber his year's subscription is justified and is a good investment. Of necessity it will be found that we shall occasionally include subjects which some of our subscribers already have, but the importance of this duplication is liable to be exaggerated in the minds of those who might notice it when the number of other desirable plates is not kept in view. It should be remembered that the classification, which we are following, and the complete reference index which will be published at the end of each year, and the advantage of a compact and uniform collection which a set of the BROCHURES will give, render it much more usable than a collection of miscellaneous plates or photographs can possibly be. While it is not to be expected that we can choose subjects which are entirely new to all of our thousands of subscribers, it will be our aim to select those which will appeal to the greatest number, and when familiar subjects are given the best obtainable photographs will be used, and those which are least likely to be already found in American collections. It is now too late for those who have not already subscribed to obtain a complete set of THE BROCHURE SERIES as our supply of the first three numbers is exhausted, and no attempt will be made in future to carry in stock any back numbers. Only enough copies of each issue will be printed to supply immediate demands. On this account those who wish for the current numbers must subscribe at once in order to make sure of them. Less than one hundred copies of the April number are now in stock and these are fast disappearing. Subscriptions in future will only be taken to date from the next succeeding issue. We wish especially to call attention to the arrangement by which clubs of five subscriptions may be made up for $2, or 40 cents for each subscription. A very little inquiry among one's friends will bring to light four who are ready to combine at this price. * * * * *