The phrase "a period with" is correct and usable in written English.
It can be used to describe a specific duration or timeframe associated with an event or situation.
Example: "We are currently in a period with significant changes in our organization."
Alternatives: "a time of" or "an era of".
At the end, he was seconded for a period with a unit investigating war crimes.
A period with the French Army in Algiers (1833) inspired some paintings of the Arab world.
From Pompeii to Vikings to Ming, if you're going to sell history, pick a period with a sexy name.
In the 1960s she worked for a period with mosaics, also publishing a manual on this medium in 1967.
The Standard & Poor's 500 index has never had a period with net losses for all the companies.
The eight-page pamphlet, now visible online, gives scholars new insights into a period with few primary sources.
She represented the United States for a period with an American partner before moving to Russia with Moskvina in 2003.
It's a period with clear parallels to the opening years of the 21st century, also a time of divisive warfare and distrust of people in power.
For a period, with the tenderness of a master for a pupil whose aesthetic perceptions were virginal, Duveen piloted Ramsay MacDonald, then an M.P., around the London galleries.
"I cannot recall going through a period with this much uncertainty," said Sung Won Sohn, an economist at Wells Fargo & Company.
In a statement, London & Partners confirmed it shared offices for a period with ABP, but said this was purely for logistical reasons.
