"there showed" is correct and usable in written English.
It is most commonly used as a verb phrase, for example: "When he entered the room, there showed a look of surprise on everyone's faces."
That, right there, showed me something".
Television footage filmed there showed him climbing into one of the helicopter's pilot seats.
"A guy there showed me how to hot-wire a school bus.
Pre-election surveys there showed Mr. Obama leading Mrs. Clinton by an average of 12 points.
That last innings there showed how frazzled the team is," Vaughan added.
The first spike of illness there showed up in epidemiological records in 1979.
His teacher there showed him some photographs by Cindy Sherman, which were his first significant introduction to contemporary art.
Tests there showed that as a result of his illness, he'd lost 70 percent of his ability to smell.
The correspondence there showed that James Hogue had been occupied with a larger, more imaginative goal than disposing of the stolen bikes.
One firefighter working there showed Mr. Amessé a tattoo he had gotten as a way to express his grief; soon Mr. Amessé noticed many such tattoos.
In the early 1990s, experiments there showed it was possible to fuse hydrogen and then release the resulting energy in a controlled way.
