Selections from the Majjhima Nikāya
By Bhikkhu Ñāṇamoli Thera and Bhikkhu Bodhi
313 pagesA Creative Commons licensed selection of suttas from Wisdom’s celebrated translation, representing about a third of the full book.
It’s still highly recommended that you get the monograph though, as many important suttas are missing from this anthology and the endnotes and introductions in the original are quite helpful.