I found this chart at multpl.com.

chart?cht=lxy&chs=750x384&chd=e:AAAQAfAvA.BPBeBuB-COCeCtC9DNDdDsD8EMEcErE7FLFbFqF6GKGaGpG5HJHZHoH4IIIYInI3JHJXJmJ2KGKWKlK1LFLVLkL0MEMUMjMzNDNTNiNyOCOSOhOxPBPRPgPwQAQQQfQvQ.RPReRuR-SOSdStS9TNTdTsT8UMUbUrU7VLVbVqV6WKWaWpW5XJXZXoX4YIYYYnY3ZHZXZnZ2aGaWala1bFbVblb0cEcUckczdDdTdjdyeCeSeiexfBfRfhfwgAgQgggvg.hPhfhuh-iOieiti9jNjdjsj8kMkckrk7lLlblql6mKmampm5nJnZnon4oIoYono3pHpXpnp2qGqWqlq1rFrVrlr0sEsUsksztDtTtjtyuCuSuiuxvBvRvhvxwAwQwgwvw.xPxfxvx-yOyeyuy9zNzdztz80M0c0s071L1b1r162K2a2q253J3Z3p344I4Y4o435H5X5n526G6W6m617F7V7l708E8U8k8z9D9T9j9y-C-S-i-y.B.R.h.x..,PyPnPcPfPfPfPcPPPBOuOYOuPBPXPqPMOuOrOmPBPcPaPXPtQAP6PyPROxPEPXO8OgObOTNyNONWNcNWNONZNkN1OFOTOgOrO2OxOoPJPqQFQhQTQCQYQrQ2Q.RERHSDS.SZRwR7SGRtRSRqSDSxTgTXTNUOVNVdVuUDSWSeSmR9RUQ5QeQFPtO-OQOQONOzPXOuOCOKOQO-PtO8OINvNUMoL6LnLTLZLcLLK7KgKEJxJbI4IUJbKgKiKiKlKlKXKHJuJWJeJmKCKaKKJ3J5J5KdK-LOLcLxMFMgKlJ0LJMYMYNROxQxNMNqRJSxUJQpQYQuRaRHQWRJRyR4R4R7TrVaTiWBXmXeZxcrhPf1aoctZYaEbkead0hUgAiYhBhaewfRh9k3m0mLuEru1o86-P7gsowjxy4.wjr.nNfJeNkDk.mpmyiNjBkIihjSd.dLcKYyYifJhMayYGdUcEaiXoXTUJYtcaZ0WBWXVgT1RSQ.RtTNSAR1S3VuUTVVP9RHKwPMP6M2Oz&chco=0000FF&chxt=x,x,y,r&chxl=0:%7C%7C%7C%7C%7C%7C%7C%7C%7C%7C1890%7C%7C%7C%7C%7C%7C%7C%7C%7C%7C1900%7C%7C%7C%7C%7C%7C%7C%7C%7C%7C1910%7C%7C%7C%7C%7C%7C%7C%7C%7C%7C1920%7C%7C%7C%7C%7C%7C%7C%7C%7C%7C1930%7C%7C%7C%7C%7C%7C%7C%7C%7C%7C1940%7C%7C%7C%7C%7C%7C%7C%7C%7C%7C1950%7C%7C%7C%7C%7C%7C%7C%7C%7C%7C1960%7C%7C%7C%7C%7C%7C%7C%7C%7C%7C1970%7C%7C%7C%7C%7C%7C%7C%7C%7C%7C1980%7C%7C%7C%7C%7C%7C%7C%7C%7C%7C1990%7C%7C%7C%7C%7C%7C%7C%7C%7C%7C2000%7C%7C%7C%7C%7C%7C%7C%7C%7C%7C2010%7C1:%7C1881-01-01%7C2010-12-16&chxr=2,0,15%7C3,0,15&chxp=3,3.47&chxs=0,666666,12,0,lt,dddddd%7C2,666666,12,0,lt,dddddd%7C3,666666,12,0,lt,dddddd&chxtc=0,-384%7C2,-750&chm=o,FF0000,0,261,5,0%7Co,FF0000,0,97,5,0%7CtBlack%20Tuesday,666666,0,97,12,0

I would not call it a bond bubble but it sure does look as if rates have bottomed to me.