A list of potential substitutes, if you can
Heirloom Cotton 4 Ply Yarn - Daffodil (046696)
Heirloom Cotton 4-Ply Cotton Wool Yarn
Heirloom Tauranga Knitting Centre
Heirloom - By Brand - Yarns
Heirloom Cotton 4 Ply – Fibre Frolic Store
Heirloom Craftee Cottage
Cotton Tauranga Knitting Centre
Heirloom Cotton 4 ply-Parfait - Yarns For All
Heirloom Cotton - 4 Ply, Yarn
Ravelry: Heirloom (Australia) Cotton 8 ply
Patonyle Merino 4 ply Yarn Great Range of Colours Available
Cotton 4 ply - 611 - Coral Pink - Heirloom
4ply – The Wool Shop