Underwood & Underwood Pedro Miguel Locks Postcard 143-18 Panama Canal

Underwood & Underwood Pedro Miguel Locks Postcard 143-18 Panama Canal

This exceptional original postcard was produced by the legendary Underwood & Underwood company, one of the premier photography firms of the early twentieth century. Underwood & Underwood built their reputation on high-quality stereoviews and documentary postcards that captured monumental events with unmatched clarity and detail. Their work documenting the Panama Canal construction stands among their most significant achievements, and this particular card numbered 143-18 is a prime example of their commitment to both artistic excellence and historical accuracy.

The front of the card presents a striking colorized photograph of the Pedro Miguel Locks during active construction on the Pacific side of the canal. Massive concrete walls rise dramatically, supported by intricate wooden scaffolding and temporary structures. Giant cranes loom overhead while workers move purposefully across the site. A large circular opening in the wall hints at the engineering precision required for the lock chambers. The image conveys the immense scale of the project that would eventually connect two oceans and transform global trade forever.

Flip the card over and you encounter the informative back that sets this piece apart from ordinary souvenir postcards. The left side features a detailed printed description of the east chamber, the outlet in the east wall, and the construction of the lower main gate, all viewed looking north. It explains that this pair of locks accommodates vessels traveling in both directions, each providing a lift of thirty and one-third feet. The text emphasizes that vessels could not pass under their own power. Instead, electric towing engines running on cog rails along the tops of the walls would pull ships through safely and efficiently. Four engines were typically used, taking approximately thirty minutes per chamber or three hours to transit all the locks in the system.

Underwood & Underwood's involvement adds tremendous value. Founded in the late nineteenth century, the company became famous for its comprehensive coverage of current events, world fairs, and engineering marvels. Their photographers traveled to remote locations and returned with images that educated the public about progress in science and industry. This postcard reflects that mission perfectly, combining visual impact with educational content that was rare for the era.

Condition and Specifications

This unused divided-back postcard remains in good vintage condition after more than a century. The front image retains strong color and sharp detail with only minor age toning. The back shows light brownish staining along the lower edge and scattered small spots consistent with age and careful storage. There are no tears, heavy creases, or missing sections. The printed text is fully legible and the cardstock is sturdy. Standard postcard dimensions are approximately 5.5 inches by 3.5 inches, printed on quality cardstock typical of early twentieth-century production.

Owning an original Underwood & Underwood postcard from the Panama Canal era connects you directly to the photographers and publishers who shaped public understanding of one of history's greatest engineering feats. Collectors of photography history, canal memorabilia, and industrial ephemera will appreciate the authenticity and provenance this piece carries. Display it in a simple frame to highlight the dramatic construction scene, or keep it in an archival sleeve as part of a specialized collection.

The combination of Underwood & Underwood branding, the specific series number 143-18, the detailed technical description on the reverse, and the colorized photographic quality makes this card a standout example of early documentary postcard art. It offers both visual appeal and substantive historical content that modern reproductions simply cannot replicate. This is a genuine artifact from the height of the canal construction period, ready to become a cherished part of your collection.

Whether you are building a focused Panama Canal collection, studying early twentieth-century photography, or simply admire the ambition captured in these images, this Underwood & Underwood postcard delivers lasting value and fascination. Its presence in your home or office will invite repeated viewing and conversation about the determination and innovation that created the Panama Canal.

 _gsrx_vers_1736 (GS 9.9.5 (1736))

Item specifics

From The Spiderpunk Web collection of authentic antiques and collectibles. Ships from the United States with tracking.