I have a print that I cannot find any info on... can you help.
Certificate of authenticity... entitled Until Tomorrow
By artist GREGG plate cancelled in 1978 printed by Circle Printing Co, inc with their stamp
An Ira Roberts incorporated out of California in there time.
About the artist... US Marine Corps, great depression, shot down, spent time adrift in a raft in ocean. There is no other name other then GREGG.
This print.. of ocean waves crashing on rocks, lots of blue 2 birds.
Anything? Thank you for your help.

Take the print to a nearby University that has an art department, a museum that has displays art and ask for anyone that is involved in the art aspect of the institution, go into a reputable art gallery, call an art appraiser, take it to a commercial printer and ask if the print is a limited edition or was it produced in quantity? From your description it appears that it is a print from a commercial press, but I may be wrong.