Hoosac Tunnel, Mass.

Men and children posed at the blacksmith's shop at the east end of the tunnel.

Deerfield valley, looking north.

Construction view of the east side.

Natural bridge.

Machinery for compressing air, central shaft.

Entrance to tunnel, west end.

Stereoscopic views of the Hoosac Tunnel, Massachusetts, and vicinity.

Entrance to tunnel, east end.

Entrance to tunnel, east end.

Marble quarry, North Adams.

Central shaft.

Hoosac Tunnel, west end of the double track.

Eastern portal.

Machinery for compressing air, Hoosac Tunnel.

Eastern portal.

East portal, sec. 8, sta. 30978.

West portal of tunnel, sec. 8.

Rock cut, sta. 290, sec. 8.

East portal, sec. 6.

West portal, section 6, sta. 20184.

Interior section of the Chicago Lake tunnel.

Tunnel on N. & W. R. R. - Upper End.

Tunnel on N. & W. R. R. - Lower End.

Looking through Wawona tunnel to Vermont, New York and Pittsburgh BigTrees, Mariposa Grove, Cal, U.S.A.

San Fernando Tunnel.