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Hannin Rocks - Construction Plan

Harbor Beach - Accumulator House

Harbor Beach - Bottom Casting For US Lens Lantern With AGA Equipment

Hawk Channel - Plate 3

Heceta Head - Plans for earth closet (wood shed), cart and pail

Highland - fog signal building 1928

Hillsboro Inlet - Electric Control to Main Light

Hillsboro Inlet - Jetty 1930

Hillsboro Inlet - Lamp Stand For Electric Lights

Hillsboro Inlet - Light Schematic Diagram Alarm & Power Transfer Circuit

Hillsboro Inlet - Red Sector Frame

Hillsboro Inlet - Stability Calculations & Diagrams for Tower

Hog Island - Lens Bearings & Jacks

Hog Island - Wire Netting For Lantern

Hooper Island - Plate 1 Plans Showing Boat Hoist on Caisson (1 of 2)

Hooper Island - Plate 2 Plans Showing Boat Hoist on Caisson (2 of 2)

Horn Island - Illuminating Apparatus

Horseshoe Range, West Group - Cistern

Horseshoe Range, West Group, Lower Front - A.G.A. Light (1 of 3)

Hospital Point - Electric Light

Hospital Point - Wiring Diagram

Huron Harbor - Diaphone Fog Signal

Huron Harbor - Elevation

Huron Harbor - Plans For Elevated Walk

Huron Island - Electric Light & Kerosene Heating Installation

Huron Island - Fog Signal, Lamp Stand & Battery Rack Details

Huron Island - Fog System Plate 2

Huron Island - Fog System Plate 3

Huron Island - Fog System Plate 4

Huron Island - Fog System Plate 5

Indian Island - Dwelling Overview

Indiana Harbor East Breakwater - Ash Chute

Indiana Harbor East Breakwater - Coal Hole & Cover

Indiana Harbor East Breakwater - Door Plans

Indiana Harbor East Breakwater - Electric Layout

Indiana Harbor East Breakwater - Flag Pole Plans

Indiana Harbor East Breakwater - Foot Bridge

Indiana Harbor East Breakwater - Lightning Conductor

Indiana Harbor East Breakwater - Proposed Site For Beacon & Boathouse

Indiana Harbor East Breakwater - Storm Shutter