Album 1700 by Peter, Paul & Mary

Album 1700 is the seventh studio album by American folk music trio Peter, Paul and Mary, released in 1967. It produced the band's most successful and final hit "Leaving on a Jet Plane", a John Denver composition. The album peaked at number 15 on Billboard Magazine's Top LP chart and was nominated for a Grammy Award in the Best Folk Performance category. Album 1700 was so named because its original LP issue was Warner Bros. Records catalog number W-1700 for the mono version and WS-1700 for the stereo version. It stayed on the charts and rose again in 1969, thanks to the single release of "Leaving on a Jet Plane". The song "I'm in Love with a Big Blue Frog" was written by Leslie Braunstein, who was the original lead singer of Soft White Underbelly, the band that became Blue Öyster Cult. The song was made into a children's book and covered by Willio and Phillio on a Disney children's album.