The cover of a Souvenir Program that was created for the March 3, 1904 dedication of the structure.
Graphic from Wikipedia / James Steeber Archive
In another circa-1907 image, we see the "glass hallway" concourse of stores, which leads into the grand Rotunda.
Photo from John J. Keyes / Dayton Metro Library, Dayton Postcard Collection / Identifier number dpc 0070
A vintage view of the Rotunda and 50-stall Food Market, which occupied its ground floor.
Photo from The American News Company / Dayton Metro Library, Dayton Postcard Collection / Identifier number dpc 0068
A circa-1918 physical layout of the ARCADE, which was a mixed-use complex before the term had even been thought of. The core of the structure, indicated in black, was built between 1902 and 1907. Structures such as the Commercial Building and Miami Savings Bank Building came along a bit later.