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The concept of this document is based on David S. F. Portree's "Mir Hardware Heritage," published in 1995. Mr. Portree is currently working on his own followup to "Heritage," to be published after Mir deorbit. My thanks to Mr. Portree for serving as my consultant during the writing of this document and as its principal reviewer. Thanks also to Joseph P. Loftus, Jr., Nicholas L. Johnson, and Tom Sullivan for their reviews and comments. The icons and drawings herein, including the cover drawing, were prepared by Laurie Buchanan of the Johnson Space Center Graphics Services, who also prepared those for "Mir Hardware Heritage," with the advice of Mr. Portree.

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