iiinova — where your digital self keeps evolving

Iron Covers @ironcovers.bsky.social · 17/09/2025

Merrill Water Box Co Water Meter. I’ve only found 4 of these. No info on the maker. #SomervilleMA

Water Meter cover. Merrill Water Box Company

040

Iron Covers @ironcovers.bsky.social · 11/08/2025

Medford (MA) Sewer System. Carbon dating shows this came out in the early 1900s. #manholcovermonday

Manhole cover from Medford Massachusetts dated 1910

041

Iron Covers @ironcovers.bsky.social · 11/07/2025

Barbour Stockwell Company. Long ago at #cambridge Massachusetts

Sewer grate marked “Barbour Stockwell, Cambridge Mass”

091

Iron Covers @ironcovers.bsky.social · 17/06/2025

#Boston built one of the first public sewer systems in the country between 1877 and 1884. This is an example of the first gen of the covers. Only a handful left.

Manhole cover from Boston, probably from the 1880s, surrounded by red bricks.

050

Iron Covers @ironcovers.bsky.social · 17/06/2025

#Boston built one of the first public sewer systems in the country between 1877 and 1884. This is an example of the first gen of the covers. Only a handful left. #manholecovermonday

3262

Iron Covers @ironcovers.bsky.social · 16/06/2025

A descent into #manholecovermonday madness in five covers. Every few years, #SomervilleMA went for a new look on their standard SSSS covers. Here’s a plain one. S’s are in a tight square in the middle. San serif. 1/5

270

Iron Covers @ironcovers.bsky.social · 29/05/2025

Sidewalk medallion. Contractors who put in the sidewalks used to leave these metal calling cards around greater Boston. Every company had a unique shape. Found in #ArlingtonMA

070

Iron Covers @ironcovers.bsky.social · 29/05/2025

#Boston Light Wire Tension Association. This was the group that had cables between stock brokerages in Boston that sent prices for ticker tape machines. Still about 5 or 6 of these covers around.

Manhole cover with BLTWA. Boston Light Wire Tension Association. Covered system that sent stock prices to ticker tape machines.

172

Iron Covers @ironcovers.bsky.social · 14/05/2025

Not too shabby for something sitting on the streets of #SomervillrMA for 131 years

Historic manhole cover from 1894 photographed on the streets of Somervillr, Massachusetts

040

Reposted by Iron Covers

HorselessAge @horselessage.bsky.social · 13/05/2025

For #manholecovermonday I think this in the public garden is possibly from the Boylston street subway (1914). Maybe from the original Tremont st subway (1899) though at this location (foot of Kosciuszko’s statue) it would have been a subway-to-surface incline so I think less likely

1284

Iron Covers @ironcovers.bsky.social · 12/05/2025

#Cambridge Water Works. Long ago merged into the Mass Water Resources Authority #MWRA. #Manholecovermonday

040

Iron Covers @ironcovers.bsky.social · 12/05/2025

#Boston Elevated Railway Company BERy. Precursor to the MTA and the MBTA. #CambridgeMA #Manholecovermonday

060

Iron Covers @ironcovers.bsky.social · 12/05/2025

New England Telephone and Telegraph Company. Founded in 1878. #CambridgeMA #Manholecovermonday

050

Reposted by Iron Covers

jlempieri.bsky.social @jlempieri.bsky.social · 05/05/2025

#manholecovermonday A peculiarly shaped cover from the oldest continuously inhabited street in America #ElfrethsAlley in #Philadelphia The narrow one way street is very Dutch, in a Gezellig way @robertloerzel.osky.social @kevinirvine.bsky.social @jamesfinngarner.bsky.social @ironcovers.bsky.social

1114

Iron Covers @ironcovers.bsky.social · 15/04/2025

One of my top five all-time favorite finds.

0133

Iron Covers @ironcovers.bsky.social · 11/04/2025

Water under water. Cambridge, Massachusetts

150

Iron Covers @ironcovers.bsky.social · 11/04/2025

Boston Edison Company Steam. Found in Somerville, Massachusetts

060

Iron Covers @ironcovers.bsky.social · 03/04/2025

2nd generation #Boston Elevated Railway (BERy) Co cover. Probably from the 1920s or 1930s until it became the MTA. Later the MBTA. Found in Somerville Massachusetts

1110

Iron Covers @ironcovers.bsky.social · 17/03/2025

1890s vintage Boston Elevated Railway Company cover. Found in Harvard Square, Cambridge, Massachusetts #manholecovermonday

083