Grand Staircase no images

[Christophe Puttemans]

While searching for HQ-images of the Grand Staircase, i stumbled upon this:

there are no original photographs of Grand Staircase taken onboard of "Titanic". All pictures were taken at her twin sister ship "Olympic".

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1st Class Grand Staircase landing at A level at RMS Olympic. Photograph No 4.
Could this be true? Did nobody ever take a picture of Titanic's beautiful staircase?