The Glass Kitchen, a 67-year-old diner-style eatery on U.S. 40 in Glasgow that's known for its family-friendly food, has been closed for at least a week.

It is unclear if the shuttering is temporary. A white sign taped to the front door Thursday said "Closed. Reopening Soon. Hopefully."

No one could be reached at the restaurant that's situated in the middle of Pulaski Highway near Del. 896 and Peoples Plaza. The phone line was disconnected Thursday.

The Glass Kitchen, with its kitschy logo of a plump chef holding a cleaver in one hand and a steaming, cloche-covered dish on a serving platter in another, is known for serving "homestyle" breakfast, lunch and dinner. It is usually open daily and has a full-service bar.

The restaurant dates back to 1952 when it was founded by Pryor "Pappy" Neuber.

From 1986 until his death in 2011, it was owned by former Glass Kitchen manager Charles J. Schreder.

The name comes from the restaurant's layout, a glass-walled kitchen in the center of the building where patrons could see food being prepared.

Neuber owned another Glass Kitchen in Lancaster, Pennsylvania, which later became known as The Willows.

The Glass Kitchen has a diner feel with its vinyl booths and friendly, but sometimes no-nonsense, servers. It was featured in the 1978 book "Roadfood" by James Beard Award-winning writers Jane and Michael Stern. The pair collaborate on guidebooks about travel, food and pop culture. They declared the Glass Kitchen "our favorite restaurant in Delaware."

Glass Kitchen hallmarks are reasonable prices and generous portions. A March 8 Facebook post touted a $5.79 breakfast special that included two eggs, two pieces of bacon, a sausage link, homefries, toast and coffee or tea.

The restaurant's menu also includes dishes such as broiled flounder, hot meatloaf sandwiches, grilled ham steaks, Salisbury steak, liver and onions and rice pudding.

It was once considered one of the best diners in New Castle County, according to a News Journal dining review from 1993, but former restaurant critic Al Mascitti also noted that the room needed sprucing up. It was renovated in 2006.

In recent years, patrons have remained loyal to the longtime establishment, according to some reviews on the Glass Kitchen's Facebook page.

"My dad always stopped here on our way to Atlantic City in the late 50's and early 60's (when the city was a family resort). Good memories here!" wrote one man.

Another said, "The Glass Kitchen is becoming a nostalgic staple in my family. The food is great comfort food, from soup and sandwiches to complete dinners. Would recommend that everyone try it at least once and you will be hooked."

The operators of the Facebook page make no mention of the restaurant closing.

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Contact Patricia Talorico at (302) 324-2861 or ptalorico@delawareonline.com and on Twitter @pattytalorico