Ebay has a tonne of them. https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2334524.m570.l1313.TR6.TRC1.A0.H0.Xhp+7475.TRS0&_nkw=hp+7475a&_sacat=0&LH_TitleDes

Ebay has a tonne of them. https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2334524.m570.l1313.TR6.TRC1.A0.H0.Xhp+7475.TRS0&_nkw=hp+7475a&_sacat=0&LH_TitleDesc=0&_osacat=0&_odkw=hp+plotter https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2334524.m...