001835: Probably single.  INCA lists as component A, but no companion
listed in GJ91.

003405: Triple, observed AC. A-C orbit P=3.7d (BFM89). AC-B sep=330"
(G69).

004391: Probably single.  INCA lists as component A, but no companion
listed in GJ91.

004628: Probably double, observed AB.  Heintz (1984, 1994) reports
astrometric perturbation, and probable optical identification in 1971
and 1978.

010476: Probably single.  INCA lists as component A, but no companion
listed in GJ91.

010700: Probably single.  INCA lists as component A, but no companion
listed in GJ91.  Heintz (1994) reports no perturbation over 50 years.

011131: Double, observed the secondary.  INCA lists as component B.  A
is HD 11171.

016160: At least triple -- observed AC.  A-B sep=165" (G69), C is
astrometric companion to A.  Companion imaged by Golimowski et
al. (1995) may not be C, but a fourth component, D.

020782: Double, observed the primary.  INCA lists as component A.  B
is HD 20781.

022049: Probably single.  Astrometric orbit noted in INCA is likely to
be erroneous.  Heintz (1993) reports no perturbation over 44 years.

024293: Probably single.  INCA lists as component B, but possible
companion binary, HD 23817AB, is known to have a different systemic
radial velocity (G69).

026965: Triple, observed A.  A-B sep=84" (GJ69), BC orbit a=6.9"
(WH83).

038393: Double, observed the primary.  INCA lists as component A.  B
is HD 38392.

041700: Triple, observed C. AB is HD 41742AB.  A-B sep=4.8" (INCA),
AB-C sep=196" (INCA).

046816: Single.  (B-V) = 1.23; value too red for conversion of SMW to
log R' (adopted cutoff was 1.20).

051633: Double, observed AB.  (B-V) = 1.10; value too red for
conversion of SMW to log R' (adopted cutoff was 1.00).

057555: Triple, observed ABC.  A-BC sep=2.4 (IDS), B-C sep=0.3" (IDS).

063077: Double, observed A.  INCA lists as single, but GJ91 lists
companion B.

065907: Triple, observed A.  A-BC sep=61" (G69), B-C sep=2.3" (G69).

068978: Triple, observed A.  A-B sep=12" (IDS), A-C sep=18" (IDS).

082798: Probably single.  INCA lists as component A, but no companion
listed in INCA or IDS.  This star is not in GJ91.

098230/1: Quadruple, observed ABCD.  INCA lists as AB, but there are
four components in the system (Heintz 1967).  AC is HD 98231, orbit
P=669d (BFM89).  BD is HD 98230, orbit P=4.0d (Heintz 1967).

098800: Quadruple, observed ABCD.  INCA lists as AB, but there are
four components in the system (Torres et al 1995).  ABCD is HD 98800.

100623: Double, observed A.  INCA lists as single, but GJ91 lists
companion B.

102365: Double, observed A.  INCA lists as single, but GJ91 lists
companion B.

111234: Triple, observed A.  A-B sep=33.6" (IDS), B-C sep=6.0" (IDS).

115383: Single. INCA lists as A, and a companion is listed in GJ69 at
34.3".  The companion is optical, checked at the telescope by the
first author during another project.

115617: Probably single.  INCA lists as component A, but no companion
listed in GJ91.

122613: Triple, observed ABC.  A-B sep=0.8 (INCA), AB-C sep=8.1"
(INCA).

128620/128621: Triple, observed A and B.  This is the alpha Centauri
system.  A-B orbit P=79.9y (WH83), C is Proxima at 7849" (G69).

131977: Triple, observed A.  A-BC sep=22" (G69), B-C orbit a=0.1"
(Mariotti et al 1990).  BC is HD 131976AB.

144179: Triple, observed AB.  A-B orbit a=0.8" (WH83).  AB-C sep=10"
(GJ91).

147513: Double, observed A.  INCA lists as single, but GJ91 lists
companion B.

147873: Possibly single.  INCA lists as component A, but no companion
listed in INCA or IDS.  This star is not in GJ91.

154195: Double, observed A and B.  Two stars of similar brightness in
the system. The southern one, component A, has the spectrum of a
solar-type star, while the northern one has a spectrum too red for a
solar-type star.  INCA lists delta V = 0.5, but identical photometry
for both components (V = 8.377 +/- .031, B-V = 0.607 +/- .015).  S
values for both stars are accurate, but no log R' possible due to
photometry confusion.

155555: Triple, observed AC.  AC orbit P=1.7d (BFM89).  AC-B sep=33"
(IDS).

155885/155886/156026: Triple, observed A, B and C.  A-B orbit a=13.9
(WH83).  AB-C sep=732" (INCA).

165896: Triple, probably observed ABC, although the field is quite
crowded and contamination possible.  A-B sep=4.7 (IDS), A-C sep=6.0
(IDS).  This star is not in GJ91.

177474: Double, observed AB.  INCA lists as AB.  B is HD 177475.

178428: Double, observed AB.  INCA lists as A, but A-B orbit P=21.9d
(BFM89).

181199: Double, observed A.  INCA lists both stars in the system as HD
181199, although they are separated by 13.8".

182466: Probably single.  IDS lists four components in the "system."
182466 is supposedly B.  A is HD 182509.  INCA lists A as type K4 III
and very small proper motions.  IDS lists B with large motions.  It is
unlikely that the two stars (or any of the others listed in IDS) are
physically associated.  This star is not in GJ91.

190406: Probably at least double, probably observed AB.  INCA lists as
A.  No companions were found in INCA and GJ91, but four companions are
listed in IDS.  At least one is a likely companion (sep=3.7"), another
is certainly not.  The other two are unknown.

200525: Possibly triple, observed AB. Component B uncertain with A-B
sep=few tenths of an arcsecond (GJ91), AB-C sep=7" (GJ91).

201091: Double, observed A.  B is HD 201092.

202940: Triple, observed ABC.  A-C orbit P=21.3d (BFM89), A-B sep=3.2"
(INCA).

207129: Probably single.  INCA lists as component A, but no companion
listed in GJ91.

212168: Double, observed A.  INCA lists both stars in the system as HD
212168, although they are separated by 20.4".

212330: Probably single.  INCA lists as component A, but no companion
listed in GJ91.

216316: Highly discordant SCTIO values for unknown reason -- possible
misidentification?

216970: Double, observed B. A is HD 216986.

218205: Triple, observed C.  AB is HD 218227AB.  AB-C sep=160" (INCA),
A-B sep=1.1" (INCA).

219834: Triple, observed AC and B.  A-C orbit P=6.4y (BFM89), A-B
sep=14.4" (INCA).

221503: Triple, observed A. A-BC sep=336" (GJ91), B-C sep=few tenths
of an arcsecond (GJ91).

222259: Double, observed A (southern component) and B.  Composite
target AB included in both Houk and Olsen lists.  INCA lists as AB,
delta V = 1.5, V(AB) = 7.89 +/- 0.35, (B-V)(AB) = 0.74 +/- 0.10.
SIMBAD photometry used for component A, no photometry available for
component B.