WD 0135-052   = L 870-2: A spectroscopic binary, consisting of a pair of DA 
WD 0135-052    stars with an orbital period of 1.55 days (Saffer, Liebert & 
WD 0135-052    Olszewski, 1988ApJ...334..947S).
WD 0413-077   = 40 Eri B: A well-studied nearby DA white dwarf. The mass 
WD 0413-077    (0.501M_{sun}_) is taken from Provencal et al., 
WD 0413-077    1998ApJ...494..759P.
WD 0419-487   = RR Cae: This is an eclipsing precataclysmic binary system 
WD 0419-487    (DA6+dM6) with a 7.29hr period. The distance (11pc) and mass 
WD 0419-487    (0.467M_{sun}_) are taken from Bruch, 1999AJ....117.3031B.
WD 0426+588   = Stein 2051B: A DC+dM binary system.
WD 0642-166   = Sirius B: This is the nearest white dwarf as well as the hottest
WD 0642-166   (Teff=24790K) and second most massive (1.034M_{sun}_; Holberg et 
WD 0642-166   al., 1998ApJ...497..935H) of the white dwarfs in the local sample.
WD 0727+482   = G107-70: A visual binary consisting of two DC white dwarfs 
WD 0727+482    (Sion et al., 1991AJ....101.1476S).
WD 0736+053   = Procyon B: A difficult to observe companion to the F5 IV-V star 
WD 0736+053    Procyon. We have adopted the Hipparcos parallax and recent mass 
WD 0736+053    determination of M=0.602M_{sun}_ of Girard et al., 
WD 0736+053    2000AJ....119.2428G.
WD 0747+073.1 A visual binary composed of two DC white dwarfs 
WD 0747+073.1  (Sion et al., 1991AJ....101.1476S).
WD 0747+073.2 A visual binary composed of two DC white dwarfs 
WD 0747+073.2  (Sion et al., 1991AJ....101.1476S).
VB 4          Not in McCook & Sion, 1999, Cat. <III/210>, the Hipparcos parallax
VB 4           of the K0 V companion (HIP 56452) is 104.5mas. Spectroscopic 
VB 4           identification from Hawley et al., 1997AJ....113.1458H. 
VB 4           Identification confirmed by I.N. Reid (2001, priv. comm.).
WD 1620-391   = CD 38 10980: A bright DA white dwarf in a wide binary system 
WD 1620-391    with a G5 V star.
WD 1748+708   = G240-72: This star is listed in McCook & Sion, 1999, 
WD 1748+708    Cat. <III/210>, as DXP9; however, BRL97 designate this as a 
WD 1748+708    "C_2_H star." We have designated it as DQ8 using the BRL97
WD 1917-077   = LDS 678A: This star is classified as a DBQA5 showing weak 
WD 1917-077    He I {lambda}4471 and C I features (Wesemael et al., 
WD 1917-077    1993PASP..105..761W). A gravitational redshift mass of 
WD 1917-077    0.55M_{sun}_ is given by Oswalt et al., 1991AJ....101..583O.
WD 2048+263   = LHS 3589: BRL97 find a low spectroscopic mass of 0.23M_{sun}_ 
WD 2048+263    and note the possibility that this is a double degenerate system.
GD 1212       Not in McCook & Sion, 1999, Cat. <III/210>, the photometric 
GD 1212        distance is from Gliese & Jahreiss, 1991, Cat. <V/70> temperature