Apparently their last previous sighting was at his college the night before.

Police in Sydney said the picnic on April 26 - two days after the previous last sighting - was their strongest lead yet.

"I'm a little hopeful," he said, given that the previous confirmed sighting was 60 years ago.

Madagascar serpent-eagle (Eutriorchis astur) - rediscovered in 1993, sixty years since the previous sighting.

The record of previous sightings allowed the astronomers to establish the distance and plot the object's orbital track.

The blue steel barrel of the Husqvarna had left its impression on the pad from previous sightings.

No, and Helm would have mentioned a previous sighting.

They expect to see something, and what they see bears a strong resemblance to previous sightings.

Hal remembered them well from his previous sightings long ago on the shores of the lagoon.

He said he thought the three previous sightings were of different whales.