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Cooke Sleeve Insulator Colors |
Chris Renaudo |
October 30, 2023 |
|
164 |
Bay State Glass Works Trade Card, Rear View. 1879-1880. |
Joe Maurath, Jr. |
October 22, 2023 |
|
140 |
Bay State Glass Works Trade Card, Front View. 1879-1880. |
Joe Maurath, Jr. |
October 22, 2023 |
|
132 |
1874 The Erie Railway Tourist Telegraph Reference |
Thomas Palone |
October 9, 2023 |
|
168 |
The "ORIGINAL" Telephone Display |
Michael Gibbons |
September 14, 2023 |
August 18 |
197 |
Locke No. 44 (U-309) |
Elton Gish |
April 13, 2023 |
|
336 |
Group of Porcelain Pin and Post Type Insulators Used for Electric Utility Testing, c.1935. |
Joe Maurath, Jr. |
April 1, 2023 |
|
181 |
Group of Glass and Porcelain High Voltage Insulators Used for Utility Testing, c.1935. |
Joe Maurath, Jr. |
April 1, 2023 |
|
163 |
Montana State College, Glass and Porcelain Insulators Used for Electrical Engineering. |
Joe Maurath, Jr. |
April 1, 2023 |
|
156 |
Horatio Read's Insulator Patent Page, Closeup of Description and Text. May 29, 1871. |
Joe Maurath, Jr. |
April 1, 2023 |
|
136 |
Horatio Read's Improved Insulator Patent Page Overview, May 30, 1871. |
Joe Maurath, Jr. |
April 1, 2023 |
|
147 |
Second photo of a Lundin cut-out in service with Hemingray CD 1104 spools |
Michael Spadafora |
February 23, 2023 |
|
185 |
A Lundin Absolute cut-out in service with CD 1104 Hemingray spools |
Michael Spadafora |
February 23, 2023 |
|
174 |
Fort Wayne Absolute Cut-out in service |
Michael Spadafora |
February 22, 2023 |
February 23 |
188 |
General Electric absolute cut-out. GE factory archive photo. |
Michael Spadafora |
February 22, 2023 |
February 23 |
173 |
Underside view of a Lundin hanger cut-out |
Michael Spadafora |
February 22, 2023 |
|
152 |
Lundin Electric and Machien Co absolute street lamp cut-out with CD 1104 Hemingray spools. |
Michael Spadafora |
February 22, 2023 |
|
152 |
Three types of late General Electric absolute lamp cut-outs |
Michael Spadafora |
February 22, 2023 |
February 23 |
150 |
General Electric absolute cut-out street lamp hanger with Hewelett type insulator. |
Michael Spadafora |
February 22, 2023 |
February 23 |
134 |
General Electric Absolute cut out hanger with CD 281 Heningray |
Michael Spadafora |
February 22, 2023 |
February 23 |
149 |
Absolute cut-out hangers for series street lamps- A photo essay. |
Michael Spadafora |
February 22, 2023 |
February 23 |
154 |
Western Union Telegraph Company |
Stephen Bobb |
January 24, 2023 |
January 30 |
199 |
Railroad Communications Pole and Openwire Circuits Detail Data Sheet. |
Joe Maurath, Jr. |
November 21, 2022 |
|
185 |
Mount Washington telegraph line |
Thomas Palone |
November 21, 2022 |
|
221 |
Zinc Cartoon ? |
Michael Gibbons |
October 26, 2022 |
August 19 |
225 |
California Color Guidance: Commonly Misidentified C.G.I.Co. Pony Colors CD 102 |
Colin Jung |
October 23, 2022 |
June 23 |
263 |
Drawing of non-existent Armstrong Deep Amber CD 154 on page 9 in Stuart's Insulator Guide |
David Whitten |
September 25, 2022 |
September 30 |
328 |
CD 150 BARCLAY compared to BROOKFIELD |
Bill Meier |
September 23, 2022 |
|
374 |
CD 150 BARCLAY |
Bill Meier |
September 23, 2022 |
|
378 |
CD 206.6 Harlow |
Bill Meier |
August 5, 2022 |
|
281 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
259 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
199 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
182 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
176 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
171 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
174 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
170 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
July 26 |
176 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
168 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
161 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
162 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
160 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
159 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
160 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
165 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
175 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
214 |
No Embossing 104s different dome styles and mould profiles #5 |
Eric Halkyard |
June 11, 2022 |
|
186 |
No Embossing 104s different dome styles and mould profiles #4 |
Eric Halkyard |
June 11, 2022 |
|
129 |
No Embossing 104s different dome styles and mould profiles #3 |
Eric Halkyard |
June 11, 2022 |
|
124 |