|
|
|
|
|
Massachusetts Glass Company Trade Card, c.1880. |
Joe Maurath, Jr. |
November 26, 01:54 PM |
|
66 |
N.E.G.M. Co CD 251 pin hole variations |
(private) |
November 2, 06:53 PM |
|
96 |
New Granite Glass Works, Stoddard, NH 1861 |
John De Sousa |
November 1, 07:43 PM |
|
89 |
John Brown's Raid |
(private) |
November 1, 11:15 AM |
|
97 |
Cooke Sleeve Insulator Colors |
Chris Renaudo |
October 30, 10:22 AM |
|
111 |
Bay State Glass Works Trade Card, Rear View. 1879-1880. |
Joe Maurath, Jr. |
October 22, 11:47 PM |
|
97 |
Bay State Glass Works Trade Card, Front View. 1879-1880. |
Joe Maurath, Jr. |
October 22, 11:46 PM |
|
91 |
1874 The Erie Railway Tourist Telegraph Reference |
(private) |
October 9, 07:54 AM |
|
125 |
The "ORIGINAL" Telephone Display |
(private) |
September 14, 12:14 PM |
November 1 |
144 |
Locke No. 44 (U-309) |
Elton Gish |
April 13, 2023 |
|
285 |
Group of Porcelain Pin and Post Type Insulators Used for Electric Utility Testing, c.1935. |
Joe Maurath, Jr. |
April 1, 2023 |
|
140 |
Group of Glass and Porcelain High Voltage Insulators Used for Utility Testing, c.1935. |
Joe Maurath, Jr. |
April 1, 2023 |
|
123 |
Montana State College, Glass and Porcelain Insulators Used for Electrical Engineering. |
Joe Maurath, Jr. |
April 1, 2023 |
|
115 |
Horatio Read's Insulator Patent Page, Closeup of Description and Text. May 29, 1871. |
Joe Maurath, Jr. |
April 1, 2023 |
|
104 |
Horatio Read's Improved Insulator Patent Page Overview, May 30, 1871. |
Joe Maurath, Jr. |
April 1, 2023 |
|
109 |
Second photo of a Lundin cut-out in service with Hemingray CD 1104 spools |
Michael Spadafora |
February 23, 2023 |
|
137 |
A Lundin Absolute cut-out in service with CD 1104 Hemingray spools |
Michael Spadafora |
February 23, 2023 |
|
132 |
Fort Wayne Absolute Cut-out in service |
Michael Spadafora |
February 22, 2023 |
February 23 |
148 |
General Electric absolute cut-out. GE factory archive photo. |
Michael Spadafora |
February 22, 2023 |
February 23 |
132 |
Underside view of a Lundin hanger cut-out |
Michael Spadafora |
February 22, 2023 |
|
116 |
Lundin Electric and Machien Co absolute street lamp cut-out with CD 1104 Hemingray spools. |
Michael Spadafora |
February 22, 2023 |
|
113 |
Three types of late General Electric absolute lamp cut-outs |
Michael Spadafora |
February 22, 2023 |
February 23 |
113 |
General Electric absolute cut-out street lamp hanger with Hewelett type insulator. |
Michael Spadafora |
February 22, 2023 |
February 23 |
101 |
General Electric Absolute cut out hanger with CD 281 Heningray |
Michael Spadafora |
February 22, 2023 |
February 23 |
117 |
Absolute cut-out hangers for series street lamps- A photo essay. |
Michael Spadafora |
February 22, 2023 |
February 23 |
115 |
Western Union Telegraph Company |
Stephen Bobb |
January 24, 2023 |
January 30 |
161 |
Railroad Communications Pole and Openwire Circuits Detail Data Sheet. |
Joe Maurath, Jr. |
November 21, 2022 |
|
157 |
Mount Washington telegraph line |
(private) |
November 21, 2022 |
|
181 |
Zinc Cartoon ? |
(private) |
October 26, 2022 |
November 29 |
197 |
California Color Guidance: Commonly Misidentified C.G.I.Co. Pony Colors CD 102 |
Colin Jung |
October 23, 2022 |
|
207 |
Drawing of non-existent Armstrong Deep Amber CD 154 on page 9 in Stuart's Insulator Guide |
David Whitten |
September 25, 2022 |
September 30 |
299 |
CD 150 BARCLAY compared to BROOKFIELD |
Bill Meier |
September 23, 2022 |
|
318 |
CD 150 BARCLAY |
Bill Meier |
September 23, 2022 |
|
344 |
CD 206.6 Harlow |
Bill Meier |
August 5, 2022 |
|
241 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
233 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
174 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
162 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
158 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
151 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
156 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
148 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
July 26 |
151 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
150 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
144 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
143 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
142 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
140 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
145 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
150 |
Smithsonian Research Trip Feb,2013 |
Stephen Bobb |
July 25, 2022 |
|
154 |