Dear List: For those of you who subscribe to the above: How many annuals do you keep, back from the most recent? I used to go on the assumption that older issues would still have value since different items with different pricing  would be included in each new year, but there is in fact quite a lot of repetition – please let me know what your practice is regarding these materials. Sincerely, Jeri Byrne, Fine Arts, Beverly Hills Public Library