Grayback district (Costilla-Huerfano counties) See. Times A g 5, 1900 Times Ag 12, 1900. Times S 3, 1900 Times 0 15, 1900 p.9 c.3 Times 0 25, 1900 p.11 c.2 Times 0 29, 1900.p.10 c.4 Trinchera Estates Co. owns ground and has issued liberal mining regulations. Times N 6, 1900 p.9 c.2 See. Times N 19, 1900 p.11 c.6 Times D 28, 1900 p.11 c.2