I must stress that it was not a first-hand observation, but in fact is third-hand.

The images were not all drawn from first-hand observation.

THE efficiency of first-hand observation, though, is difficult to duplicate.

American policy makers would benefit greatly from hearing her first-hand observations and attempting to answer the questions she poses.

Individual accounts cannot be confirmed by first-hand observation.

The report's conclusions were based on testimony at public hearings the committee held, interviews, reports from other agencies and first-hand observations by committee members.

He traveled to New York on several occasions to make first-hand observations.

Collection of first-hand observations about the author.

His cogently written book is packed with first-hand observations and powerful conclusions.

His September 11, 2001, art series is poignant in that it depicts the first-hand observations of an expressionist.