TORONTO (CP) — Beatle John Lennon and his wife Yoko Ono arrived at Toronto International Airport from London Tuesday for a one-week visit to launch a Christmas crusade for peace.

Much to the dismay of some

1,000 placard-waving fans whe had gathered to greet the pop singer, Lennon left quietly through a back door and was whisked away to a secret hideout.

In a statement he said:

“It’s great to be back in Canada again and we expect to stay for a week.”

He said he would hold a news conference today.

Lennon and his wife travelled under the pseudonym of Mr. and Mrs. Chambers, but made little effort to hide their identity during the flight.

The Beatle told reporters he was sending the bill for his latest world peace gesture—the printing of thousands of Christmas posters reading “War Is Over, If You Want It”—to United States President Richard Nixon.

These posters now are put up in 11 cities around the world, he said.

“They cost less than the life of one man and I am sending the bill for printing to President Richard Nixon.”

Lennon, who twice visited Canada earlier this year, said in London last Sunday he decided to return to Canada because it was the best place to “talk to the press about peace.”