I go to Van Ginkels on Ingersoll Ave in Des moines just west of downtown.
Get off on the Hwy 235 MLK/airport ave exit and go south turn right on Ingersoll its on the south side of the street.
They will sew on letters or silk screen or do custum chenille for letter jackets.
Much of the work is done on the premises. I highly reccamend their work.
I had 3 jersey's made w/ sewn numbers and names for about $65.00 each. They have been around for years and its nice to support a local business. You won't be disapointed.