Ground plan of P52 by W. G. Wood-Martin as published in his article <i>The Rude Stone Monuments of Ireland (Continued).</i> The Journal of the Royal Historical and Archaeological Association of Ireland, Fourth Series, 7, no. 68/69 (1886): 539–95. Original caption:<br>Fig. 52.—No. 52 Monument, Carrowmore. Ground Plan of Cromleac. (Scale, 4 feet to 1 inch.)
<bdi><a href="https://en.wikipedia.org/wiki/en:William_Gregory_Wood-Martin" class="extiw" title="w:en:William Gregory Wood-Martin"><span title="Irish antiquarian">William Gregory Wood-Martin</span></a>
</bdi>
1886
<a rel="nofollow" class="external text" href="https://archive.org/download/journal02irelgoog/journal02irelgoog.pdf">p. 595 of W. G. Wood-Martin, <i>The Rude Stone Monuments of Ireland (Continued).</i> The Journal of the Royal Historical and Archaeological Association of Ireland, Fourth Series, 7, no. 68/69 (1886): 539–95</a>; this image was extracted from the PDF (page number 691), the white background was made transparent, and the format was converted to PNG.