Would any white school glue do I wonder. Some glues can be mixed with water and used but do they leave marks. In England not seen elmo glue. I split my large quits into sections size of kitchen table. Then quilt leaving a 1inch edge all around. Join as would any pieced section then trim batting and fold over backing and hand stitch. To finish quilt over the join .this is so much easier especially with physical problems as well as house size problems. Look at "angiequilts" blog where quilts done this way on show , Posh Lize, is not old or informed her wonderful quilt is being done in 3 sections.