Report for Copper Harbor Rear Range (Michigan) - 1910

District: 9th
Inspector: Oliver G. Brown
Location: Copper Harbor Range Light Station. Both towers located on Fort Wilkins Military Reservation, S'ly shore of lake Superior.
Date of Report: 08/23/1910
Site: Reservation, Lots 2 & 3. Sec. 33, T59N, R28W
Date of Reservation: 04/21/1892
Date of Deed:
Date of Permission:
Date of Lease:
Area of the Entire Site: 116.35 acres
Area Inclosed: About 1/2 acres
Character of Soil: Thin layer of sand & gravel with rock out-croppings.
Distance of tower from Nearest High-Water Mark:
Inclosures to Premises / Type of Fence: Board fence encloses site of rear range.
Wharf or Landing on Premises: A crib linding extends out into 4 ft. of water near front range tower.
Road to Land or Wharf Chararacter of and Distance:
Means to Reach Light Station: By Keweenaw Central RR to Mandan, Mich., thence by rig to light Station.
Distance to Nearest Road: 9 miles to KC RR Station at Mandan, Mich. Public road from Mandan runs directly in front of dwelling.
Distance to Post Office: 9 miles to Mandan PO
Distance to Village: 36 miles to Calumet.
Facilities for Public Conveyance: None.
Facilities for Private Conveyance: By rig from Mandan RR Station, 9 miles to Light Station.
Means Used for Support of Lantern: Tower
Number of Separate Lights: 2
First Built or Established: 1865
Last Rebuilt, Repaired, or Renovated: Rear tower & dwelling in 1910.
Condition at This Date: Excellent.
Shape of Tower in Plan: Square
Form of Tower: Square prism.
Height from Base to Ventilator Ball: 33' 6"
Height of Focal Plane Above Mean High Water: 39'
Background of Lighthouse as Seen from Sea: Wooded.
Color of Tower: White
Color of Tower/ How Produced: Paint.
Tower Connection: Rear tower rises from front of keeper's dwelling.
Object of Navigation: Guide to entrance to Copper harbor.
Building Materials: Wood frame with clapboard.
General Description:
Wall Thickness at Base: 6"
Wall Thickness at Parapet: 6"
Diameter at Base: 10' x 7'
Diameter at Parapet: 10' x 7'
Kind of Stairway and Steps: Wooden stairs.
Number of Landings: 1
Size of Glass: 2' 11" x 2' 0"
Number of Windows and Size of Sash: 1 window, sash 5'5" x 2' 5"
Number of Doors: 1wooden door leads from stairs to lantern.
Kind of Foundation and Depth Below Surface:
Character of Soil Surrounding the Lighthouse: Rocky, covered with a thin layer of sand & gravel.
Soil Susceptibility: Yes.
Miscellaneous Remarks:
Lantern and Fixtures
Order of Lantern:
Shape of Lantern:
Diameter to Glass:
Diameter in the Clear:
Number of Sides: 4
Type of Bars:
Thickness of Bars:
Height Glazed: 5' 5"
Number of Plates in Height: 2
Number of Plates Each Side: 2
Thickness of Plates:
Size of Plates: 2' 11" x 2' 0"
Number of Storm Panes:
Unglazed Side of Lantern: 3
What Bearings:
Construction Material Lantern: Wooden ceiling
Construction Material Roof / Cowl: Metal slate shingles.
Ventilator / Cowl: No ventilator
Lightning Spindle: Copper with platinum point.
Description of Lightning Rod: 1/8" x 2" copper band leads from roof of lantern to wet soil.
Balustrade: None.
Lantern Doors: Wood.
Floor of Lantern: Wood.
Watchroom Doors: No watchroom
Parapet Diameter:
Location / Number: 1 located above window.
Ladders / Cleaning Arrangement: None.
Curtain Hooks / Hanger: Nails driven into window sash.

How is Watchroom Fitted: No watch room
How is Relief Called:
Where is Call System Led:
Illuminating Apparatus
Kind of Apparatus:
Intensity in Candles:
Name of Maker: None given.
Year Made: Unknown.
Marks and Number: None.
Order of Apparatus: Lens lantern
Inside Diameter: 12"
Light Characteristic: Fixed white.
Time of Revolution: Fixed.
Flash Interval:
Duration of Flash:
Arc of Each Fixed Part:
Number of Panels: 3 panels 1 of which is a brass reflector that is used for a door.
Number of Flash Panels:
Arc of Each:
Number of Elements in Central Drum: 1 central drum of 7 elements.
Number of Prisms Above Center Drum:
Number of Prisms Below Center Drum:
Does Apparatus Revolve?: False
Is There a Revolving Belt?: False
Revolving Panels:
How Flash is Produced:
Number of Vertical Elements Panel:
Fixed Lens Covered:
Pedestal: Pedestal is an iron tripod flanged to acircular wrought iron base & bolted to lantern floor. Legs of pedestal are 3/4" iron rods. A cast rion base is bolted to top of tripod & holds lens.
Service Table: Small shelf in each tower is used as a service table.
Draft Tube Description: A Russia iron ventilator pipe is connected to top of lens & extends up into ventilator in roof of lantern.
Revolving Machinery:
Standby and Description:
Chariot Float or Balls:
Chariot Description:
Length of Drop Tube:
Clock Weight:
Length of Winding Time:
Drive During Rewind:
Machinery Protection:
Lens Protection:
How Color is Produced:
Red Sectors Description:
Where Color Attached:
Form of Colored Glass:
Lamp Description: Hains 6th order.
Type of Illuminant:
Number of Spare Lamps:
Number of Spare Burners:
Candle Power:

Vapor Oil Lamp
Number of Wicks or Mantels: 1
Diameter of Outside Wick: 1" flat wick
Diameter of Mantel:
Diameter of Circum Circle:
Closets and Store Rooms
Tower Closet Use: No closets in tower.
Oil House Description: Old magazine house at Fort Wilkins is used as an oil-house; located about 200 ft. E'ly from cwelling.
Oil House Inside Dimension: 13' x 13'
Oil House Construction Material: Stone & plastered inside.
Oil House Capacity:
Other (Describe): 3 closets; 2 upstairs & 1 down. Cellar under whole dwelling.
Suitability: Dry & suitable.
Fog Signal General
Fog Signal Kind: No fog signal.
Time to Start:
How Long Will Pressure Last:
Year of Manufacture:
Timing Device:
If whistle, siren, or trumpet, Pressure at Which Blown:
Height Above Water:
Compass Direction:
Distance and Direction:
Water Supply:
Reached from Lighthouse:
Description of Fog Signal Building:
Pressure And Recording Gauge:
Location: Rear tower is on front of dwelling.
Coloring: White.
Construction Materials: Frame building shingled with metal slates.
Number of Rooms: 6 rooms.
Number of Dwellings: 1
Heating Plant: Steam heat. Ideal Arco plant. Iron heater w/ 3 colum radiators.
Number of Keepers: 1 keeper and family.
Furnished Quarters:
NOT Furnished Quarters:
Outhouses: Privy, Laundry, barn.
Outhouse Coloring: Privy, white; laundry, white; barn, buff-color.
Paths and Walks: Concrete walks between ranges & around the dwelling.
Area Inclosed: None.
Area of Garden: None.
Area Timber or Shrubbery: Whole site with the exception of a samll tract around the range is timbered.
Cultivation Area Available:
Area Cultivated: None.
Character of Surroundings: Rocky soil.
Stove, Maker:
Stove, Size:
Sink, Maker:
Sink, Size:
Pump, Maker:
Pump, Size:
How Procured: From lake for drinking purposes.
Quality: Good.
Quantity: Ample.
Injury Possible:
Purity Precaution: Cistern under kitchen but no filter.
Tank Capacity: Under kitchen.
Tank Material: Brick lined with cement.
Distilling Apparatus: False
Distilling Manufacturer:
Well Description: No well.
Well Diameter:
Well Lining:
Pump or Bucket: No well.
What Power Used:
Distance from Dwelling:
General Opinion: Healthfulness is excellent.
Diseases: None.
Local Causes:
Recommended Improvements:
Access to Lighthouse: No boat house, A public road from Mandan & Eagle Harbor, known as the Military road runs in fron of the dwelling.
Distance and Direction:
Miscellaneous Remarks: