Folder BLR

See Chuck Hensley's comprehensive index to articles in the BLR in the folder below.  It can be used to locate articles to research, whether found in the TCI LIbrary or elsewhere.

Chuck has offered to scan a limited number of pages from his collection (at his convenience).  Send requests using the "Contact Us" link in the Menu Bar above.

HINT:  Search for "BLR" followed by a topic keyword to find a series of related articles.  Use alphabetic sort to display them in chronological order.  e.g.  BLR PBX  or  BLR Picturephone.

When posted, complete scanned BLR issues from Sept. 1925 - Dec. 1961 were available here:
  https://worldradiohistory.com/Bell_Laboratories_Record_Issue_Key.htm

Categories

Folder BLR Collections
Folder BLR Index

Documents

Select Toggle Title Date Download
pdf 62jun BLR p202 - Quick-Connect Clip Terminal (352 downloads) Popular Download (pdf, 2.11 MB)
pdf 62jun BLR p208 - Human Factors Engineering and Modern Communications (347 downloads) Popular Download (pdf, 1.45 MB)
pdf 62jun BLR p232 - BTL ad - New Wire Connector (313 downloads) Popular Download (pdf, 477 KB)
pdf 62jun BLR p216 - Digital Computer Synthesizes Human Speech (403 downloads) Popular Download (pdf, 1.15 MB)
pdf 75Jan BLR p16 - Alpha and Omega of the Network (945 downloads) Popular Download (pdf, 3.10 MB)
pdf 69Feb BLR P44 - Bell Laboratories Material Research (536 downloads) Popular Download (pdf, 12.63 MB)
pdf 62sep BLR P297 1A Line Concentrator (329 downloads) Popular Download (pdf, 1.71 MB)
pdf 62oct BLR P332 Industrial Designer Role Purpose (306 downloads) Popular Download (pdf, 1.61 MB)
pdf 62jul BLR P232 TWX Goes Dial (368 downloads) Popular Download (pdf, 1.76 MB)
pdf 50jan BLR Vol XXVIII No. 1 (560 downloads) Popular Download (pdf, 23.52 MB)
pdf 69Jan BLR P3 Role of Research (430 downloads) Popular Download (pdf, 6.34 MB)
pdf 56June BLR P201 Mechanized Memory (571 downloads) Popular Download (pdf, 1.49 MB)
pdf 51Mar BLR P115 - W-R-J-M (917 downloads) Popular Download (pdf, 348 KB)
pdf 68Aug BLR P222 Polygrid For AUTOVON (1107 downloads) Popular Download (pdf, 1008 KB)
pdf 68Apr BLR Cover AUTOVON Set (754 downloads) Popular Download (pdf, 226 KB)
pdf 68Apr BLR P106 AUTOVON (2457 downloads) Popular Download (pdf, 1.21 MB)
pdf 70Dec BLR P318 - A Decade Of ESS (978 downloads) Popular Download (pdf, 1.93 MB)
pdf 26Jun BLR P137 Vacuum Tubes Manufacture (1967 downloads) Popular Download (pdf, 1.41 MB)
pdf 77Mar BLR P79 - Com Key - 718 1434 and 2152 KTS (2212 downloads) Popular Download (pdf, 1.80 MB)
pdf 77Nov BLR P271 HORIZON PBX (1952 downloads) Popular Download (pdf, 1.19 MB)

New User?

Read the articles under "Introduction" in the black menu bar above.

Recent Contributors

Thanks for new documents from Ed Palazzo, Bruce Patterson, Jon Kolger, Paul Ivester, Len Hicken, Paul Fassbender, Fred Haynes, Kurt Rudolph, Wade ("Kellogg KITT"), the Connections Museum, Rick Walsh, Jeff Lamb, Jeremy Walters, Mark Cuccia, Alan David, Harry Joseph, Charlie Terry, Karl Brose, Dennis Hock, Tim Griffin, Remco Enthoven, and Steve Cichorsky.

Please send a file to add your name to this list!

30 Latest Additions

Who's online

We have 2245 guests online

Hints for using the TCI Library

"Menu Bar" for site navigation.
Many menu choices are hidden until you mouse over words in the black Menu Bar (above).  If you want help getting started, see the links under the word "Introduction" in the Menu Bar.
 
The user interface is oriented toward the user’s choice to either Browse or Search for information.  The Browse the Library menu entry offers many quick links to move around the Library quickly.  Try it!

Three search options.
The Library’s keyword-based searches, called Basic Search and Advanced Search, accept keywords as short as 2 characters (WE, AE, etc.) and search strings up to 255 characters.  If you get more than 1,000 items, refine your search or try the Google Search option.
 
When selected from the Menu Bar, Google only searches for files in the TCI Library.
 
Library INBOX.
The INBOX may hold some files that have been submitted but not fully processed into the Library.  These are often topics of current discussion on the TCI Email Group. Items in the INBOX are not found using Basic or advanced searches, but ARE found by a Google Search.
 
Remember to check the INBOX if you don't find something with the other searches.
 
Finding BSPs.
Many BSPs are currently only identified by BSP number. If a text search doesn’t produce a BSP, try looking in one of the many BSP index documents to find a BSP number for the product you are researching just as you would do if referencing a paper library of the BSPs. Then enter the BSP number in the search box.
 
Finding CDs and SDs.
Some related CDs and SDs are filed in different areas. Try searching for just the numeric portion of the name.  Remember to check the INBOX if you don't find something with the Basic or Advanced searches -- or use the Google search.
 
Compact Category Listing.
When browsing, to change the category listing view from normal to compact, click on Browse the Library in the black menu bar.
 
To change from compact to normal view, click on Document Repository in the drop down under Browse the Library.