What these images have in common is that they all pertain in some way to the summer solstice or midsummer, starting with an engraving based on Shakespeare’s Midsummer Night’s Dream, courtesy of the Library of Congress (the source for the other pictures as well, unless otherwise noted).
Shakspeare [sic] – Midsummer Nights Dream Act IV Scene I–A wood – Titiania [i.e., Titania], queen of the fairies, Bottom, fairies attending & etc. 1796. Painted by H. Fuseli, R.A. ; engraved by I.P. Simon. LC-DIG-pga-02780