The pictures are rather small and are mainly for the purpose of style identification. These pictures could be found in quite a few Chinese tea websites and teapot websites. So far there is no copyright concern. I guess some non-Chinese yixing lovers would be interested in these pictures as well, and therefore put them in the above public album.
I have a few other series of Factory #1 teapots pictures and will put them together in a folder soon.
These are not inclusive of all Factory #1 teapot styles, but cover most of the commonly seen styles. There were large amount of custom order teapots that were not included in Factory #1 catalog as those in the pictures showed here. In the market, the "cataloged ones" are usually more expensive than the uncatalogued ones, when qualities are similar in all aspects. This is largely for identity reasons, as it's easier to identify and authenticate the cataloged teapots. I'm not sure if it would still be the case in the long run, as some of the cataloged styles were made in much greater amount than some of the uncatalogued styles.
For people who are interested in more detailed and artistic documentation of some Factory #1 yixing styles, I would recommend this book: 钰壶雅集 Yu Hu Ya Ji
Some pictures of this book can be find on this page of Wu-Shing Books. This is one of the three "bibles of yixing teapots" named by some Chinese yixing lovers (another one of three is the Gu Jingzhou book).
As far as I know, this book is still being sold in Taiwan for about $60-80.
And here again is the question, if you have $100, would you spend it on a good but not fabulous teapot, or a picture book of splendid teapots?
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