October 15, 1909 Newspaper advertisement in the <i>Fort Wayne Journal-Gazette</i> mentioning Mineralite bowling balls
<i>Fort Wayne Journal-Gazette</i> (newspaper)
<cite style="font-style:normal"> (<span class="mw-formatted-date" title="1909-10-15">October 15, 1909</span>). "<a rel="nofollow" class="external text" href="https://newspaperarchive.com/fort-wayne-journal-gazette-oct-15-1909-p-10/">Bowling. / Brunswick Bowling Alleys. / Finest B.-B.-C. Alleys in the State. / Ora Tonkel, Proprietor. (advertisement)</a>". <i>Fort Wayne Journal-Gazette</i>: 10.</cite>