Optics

Read more about New Lamps From W. Lewis (Defends Against IWP Lewis)

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jpg (image/jpeg)

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4.2 MB

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pdf (application/pdf)

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2.72 MB

New Winslow Lamps In Lighthouses

Year of Photo / Document:

1816.05.29

Document Type:

newspaper clipping

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png (image/png)

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1.22 MB

Payment To Winslow Lewis

Year of Photo / Document:

1826.11.28

Document Type:

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payment for lighting apparatus and equipment

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jpeg (image/jpeg)

File Size:

3.87 MB

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pdf (application/pdf)

File Size:

4.49 MB

Piedras Blancas - Lens Removed From Lighthouse

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jpeg (image/jpeg)

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890.19 KB

Piedras Blancas - Mercury Float

Year of Photo / Document:

1913.03.15

Document Type:

drawing

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jpeg (image/jpeg)

File Size:

238.65 KB

Pigeon Point - Bulls Eye

Year of Photo / Document:

1975

Document Type:

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jpg (image/jpeg)

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381.68 KB

Pigeon Point - Charriot Wheels

Year of Photo / Document:

1975

Document Type:

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jpg (image/jpeg)

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369.61 KB

Pigeon Point - History Of Pigeon Point Light Is Cloudy

Document Type:

newspaper clipping

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jpeg (image/jpeg)

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696.9 KB

Pigeon Point - Inside The Lens

Year of Photo / Document:

1963

Document Type:

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jpeg (image/jpeg)

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498.14 KB

Pigeon Point - Prisms

Year of Photo / Document:

2007

Document Type:

photo (color)

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jpeg (image/jpeg)

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900.22 KB

Plum Island Range Rear - Lens Pedestal & Clock

Document Type:

drawing

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jpeg (image/jpeg)

File Size:

330.08 KB

Poe Reef - Lens, Switch Boards & Wiring Diagrams

Year of Photo / Document:

1929.02.15

Document Type:

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jpeg (image/jpeg)

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360.22 KB

Point Arena - Reassembling The Lens

Document Type:

photo (color)

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jpg (image/jpeg)

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708.87 KB

Point Bonita - Installation Of Crouse-Hinds Lamp Changer

Year of Photo / Document:

1965.05

Document Type:

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jpeg (image/jpeg)

File Size:

836.87 KB

Point Bonita - Lantern & Lens

Year of Photo / Document:

1988

Document Type:

photograph

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jpeg (image/jpeg)

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267.58 KB

Point Bonita - Lens Plan

Year of Photo / Document:

1911.09.06

Document Type:

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jpeg (image/jpeg)

File Size:

665.59 KB

Point Bonita - Man And Lens

Year of Photo / Document:

1978

Document Type:

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jpeg (image/jpeg)

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173.33 KB

Point Fermin - Light Installation

Year of Photo / Document:

1970.02.24

Document Type:

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jpeg (image/jpeg)

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563.34 KB

Point Fermin - Rotating Beacon

Year of Photo / Document:

1968.07.30

Document Type:

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jpg (image/jpeg)

File Size:

463.6 KB

Point Judith - Lens Diagram

Document Type:

drawing

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jpg (image/jpeg)

File Size:

7.86 MB

Point Judith - New Light

Year of Photo / Document:

1816.12.03

Document Type:

newspaper clipping

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png (image/png)

File Size:

1.17 MB

Point Loma - 3rd Order Lens Is Being Shipped

Year of Photo / Document:

1890.01.05

Document Type:

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jpg (image/jpeg)

File Size:

198.33 KB

File Type:

pdf (application/pdf)

File Size:

951.77 KB

Point Loma - Best Way To Lower Lens

Year of Photo / Document:

1890.11.20

Document Type:

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lowering the pedestal best way to lower lens

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jpeg (image/jpeg)

File Size:

521.52 KB

Point Loma - Current Lens To Be Moved To New Lighthouse

Year of Photo / Document:

1890.07.07

Document Type:

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new lighthouse to use old lighthouse's lens

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jpeg (image/jpeg)

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864.62 KB

Point Loma - Decision On Lens Characteristics

Year of Photo / Document:

1890.12.05

Document Type:

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jpeg (image/jpeg)

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729.06 KB

Point Loma - Estimate Of Funds For Lens

Year of Photo / Document:

1890.03.19

Document Type:

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jpg (image/jpeg)

File Size:

206.06 KB

File Type:

pdf (application/pdf)

File Size:

968.43 KB

Point Loma - General Depot Letter Regarding Lens

Year of Photo / Document:

1890.11.08

Document Type:

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jpeg (image/jpeg)

File Size:

476.48 KB

Point Loma - Lamps Are Finished

Year of Photo / Document:

1890.09.17

Document Type:

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jpeg (image/jpeg)

File Size:

425.2 KB

Point Loma - Lamps Shipped

Year of Photo / Document:

1890.09.20

Document Type:

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jpeg (image/jpeg)

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457.12 KB

Point Loma - Lamps To Be Express Shipped

Year of Photo / Document:

1890.09.19

Document Type:

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jpeg (image/jpeg)

File Size:

827.28 KB

Point Loma - Lens Characteristics

Year of Photo / Document:

1890.07.23

Document Type:

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jpeg (image/jpeg)

File Size:

661.34 KB

Point Loma - Lens Has Shipped

Year of Photo / Document:

1890.08.22

Document Type:

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new lens characteristics and shipping info

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jpeg (image/jpeg)

File Size:

485.67 KB

Point Loma - Lens Is Shipping

Year of Photo / Document:

1890.07.22

Document Type:

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jpeg (image/jpeg)

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459.91 KB

Point Loma - Letter That Accompanied Notice To Mariners (Notice Missing)

Year of Photo / Document:

1891.02.25

Document Type:

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jpeg (image/jpeg)

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764.37 KB

Point Loma - Need For Lens Characteristic Clarification

Year of Photo / Document:

1890.02.07

Document Type:

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jpeg (image/jpeg)

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765.2 KB

Point Loma - New Lens To Be Shipped & Old One Returned

Year of Photo / Document:

1890.07.21

Document Type:

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jpeg (image/jpeg)

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841.34 KB

Point Loma - Proposed 3rd Order Lens

Year of Photo / Document:

1888.04.12

Document Type:

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jpeg (image/jpeg)

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493.24 KB

Point Loma - Request For Lens Blue Print

Year of Photo / Document:

1889.08.15

Document Type:

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jpeg (image/jpeg)

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497.1 KB

Point Loma - Transportation Charges

Year of Photo / Document:

1892.06.03

Document Type:

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jpeg (image/jpeg)

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828.13 KB

Point Loma - Ways To Lower Lens

Year of Photo / Document:

1890.11.15

Document Type: