File:Copyright Popular Electronics 1975.jpg

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English: Copyright catalogs at the Library of Congress. Located in room LM-404 of the James Madison Memorial Building, Washington DC.
The publication data for each magazine issue was hand-entered on the 3 by 5 inch index card. This magazine was published a full month before the cover date; the January 1975 issue was published in late November 1974. Subscribers received this issue around the second week of December 1974.
Français : Catalogues de copyrights de la Librairie du Congrès. Salle LM-404 du bâtiment James Madison Memorial à Whashington DC.
Les données de publication de chaque numéro d'un magazine sont écrites sur un index de 3 pouces par 5. Ce magazine a été publié un mois entier avant le mois couvert ; le numéro de janvier 1975 a été publié le 29 novembre 1974. Les abonnés ont reçu leur numéro pendant la seconde semaine de décembre 1974.
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Source Own work
Author Michael Holley Swtpc6800
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current05:04, 29 June 2009Thumbnail for version as of 05:04, 29 June 20091,535 × 1,214 (296 KB)wikimediacommons>Swtpc6800== Summary == {{Information |Description={{en|1=Copyright catalogs at the Library of Congress. Located in room LM-404 of the James Madison Memorial Building, Washington DC.}} |Source= self-made |Author= Michael Holley Swtpc6800 |Date=20

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