Based on the clothing, furnishings, tools, and MOSTLY the song title – we place this at about 1918. OK, so it’s just that the song was wildly popular in 1918, and we know little boys wore sailor suits at that age at that time.
The woman’s ensemble could be from Regency.. or Directoire revised in the late 1890’s, or the new waistline of 1910.. but because it’s all “mixed up”, and with “modern” fabrics and trims, we place it in the 1910-20 range.