Here's a link to O'Susannah's Quilt shop in Watkins Glen -- scroll down their main page for info on the trip to Quilters Take Manhattan in September.
Here's a link for info on LAST YEAR's Quilters Take Manhattan event. There's no info on the site for the 2014 show yet.
Other national-level shows --
The American Quilter's Society upcoming 2014 shows are in Lancaster, Paducah, Charlotte, Grand Rapids, Chattanooga, and Des Moines. Click here for their website.
Quilts, Inc has upcoming shows (International Quilt Festivals) in Chicago and Houston, with a new stitching show in Portland this year. Click here for their website.
Macuso Management sponsors quilt shows in Virginia, New Jersey, Georgia, Colorado, New Hampshire, Florida, Philadelphia area, two in California. Click here for their website.
Other large shows include the Vermont Quilt Festival in June (click here for the website) and MQX shows (focusing on machine quilting) in New Hampshire, Illinois, and Oregon (click here for the website).