Probably, so long as you limit the sharing to what is specifically stated in the written letter from the company (e.g. you say your church sewing group). There is likely a successor(s) in interest to the company's rights and property. If so, the successor(s) in interest to copyright rights for the pattern may be bound by what the original owner granted to you (apparently a limited license to share and/or use the pattern). Please be aware that the term of a copyright can be very long by comparison to the 23 years that has elapsed.
Answered on Dec 19th, 2013 at 7:31 AM