1 In DR 21, possibly associated to the radiosource WSRTGP 2037+4206 
 1  (Taylor et al. 1996ApJS..107..239T).
 2 In DR 17. 
 3 In DR 17. Brightest star in cluster 14 of Le Duigou & Knodlseder 
 3  (2002A&A...392..869L).
 4 In Comeron et al. (2002A&A...389..874C); classified as O9.7II by 
 4  Hanson (2003ApJ...597..957H).
 5 Classified as O8V: by Morgan et al. (1955ApJS....2...41M); X-ray emission 
 5  (Chlebowski et al., 1989ApJ...341..427C).
 6 Possibly related to the HII region G081.3+01.1 in DR17.
 7 In DR 23. Brightest star in cluster 15 of 
 7  Le Duigou & Knodlseder (2002A&A...392..869L).
 8 Possibly associated to DR 5.
 9 Classified as O7V: by Vijapurkar & Drilling (1993ApJS...89..293V).
10 Member of cluster NGC 6910.
11 In DR 21.
12 Classified as B0.5V by Hoag & Applequist (1965ApJS...12..215H)
13 In DR 22, member of cluster 11 of Le Duigou & Knodlseder 
13  (2002A&A...392..869L).
14 In DR 17, member of cluster 12 of Le Duigou & Knodlseder 
14  (2002A&A...392..869L).
15 In cluster associated to DR 23 (Bica et al., 2003A&A...397..177B).
16 Possibly associated to DR 5.
17 In DR 22.
18 Possibly associated to DR 5.
19 Possibly associated to the radiosource MITGJ2029+3936 (Griffith et al. 1991).
20 Possibly associated to DR 23.
21 In DR 17.
22 In DR 17.
23 Possibly associated to DR 5.
24 Probably associated to IRAS 20346+3926A.
25 In cluster NGC 6910 (Delgado & Alfaro, 2000AJ....119.1848D).
26 In DR 21.
27 Possibly associated to DR 22.
31 Identified as a star with very strong H{alpha} emission by 
31  Merrill & Burwell (1950ApJ...112...72M).
32 Wolf-Rayet star, infrared spectral type WC8; see Pasquali et al. 
32  (2002A&A...396..533P). It had been previously recognized as an emission-line
32  star by Melikian & Shevchenko (1990Afz....32..169M).
33 Already recognized as an emission line star by Dolidze (1975AbaOB..47....3D) 
33  (star 20-091).
34 In the W75N star forming region, strong excess at 8um 
34  (Davis et al., 2007MNRAS.374...29D).
35 Suspected Herbig Ae/Be star basedon its infrared excess.
36 Double star, separation 1.1": type estimated as G3IV-V by Straizys et al. 
36  (1989VilOB..83....3S) based on Vilnius photometry.
37 Identified as a star with weak H{alpha} emission by 
37  Merrill & Burwell (1950ApJ...112...72M).
38 In DR 6.
39 Identified as a star with strong H{alpha} emission by 
39  Merrill & Burwell (1950ApJ...112...72M).
40 In the HII region DR 21.
41 Possibly associated to IRAS 20288+3934.
42 Already recognized as an emission line star by Dolidze (1975AbaOB..47....3D) 
42  (star 20-089). In the HII region DR 5.
43 In DR 21.
51 Possibly associated to DR 5. Classified as O6.5 by 
51  Morgan et al. (1955ApJS....2...41M).
52 Classified as B8 by Straizys et al. (1989VilOB..83....3S) based on 
52  Vilnius photometry.
53 Eclipsing binary (Giuricin et al., 1983A&AS...54..211G), classified as B2p?e?
53  by Morgan et al. (1955ApJS....2...41M).
54 Classified as B3II by Morgan et al. (1955ApJS....2...41M).
55 Classified as B0.2III by Walborn (1971ApJS...23..257W).
56 In cluster NGC 6910; classified as B1 by Walker & Hodge (1968PASP...80..290W)
57 Classified as B2IV by Guetter (1968PASP...80..197G).
58 In cluster NGC 6910; classified as spectral type B1.5IV by 
58  Walborn (1971ApJS...23..257W).
59 Classified as O8V: by Morgan et al. (1955ApJS....2...41M).
60 Ultraviolet-bright star, type B estimated by 
60  Carruthers & Page (1984ApJS...54..271C).
61 Classified as G0Iab: (Nassau & Morgan, 1952ApJ...115..475N) and as G2IV 
61  (Bidelman, 1957PASP...69..147B).
62 Classified as F8IV (Nordstrom et al., 2004A&A...418..989N).
63 High proper motion, horizontal branch star; see e.g. Behr 
63  (2003ApJS..149..101B).
64 Close binary, high proper motion star; Fabricius & Makarov 
64  (2000A&A...356..141F).
65 Classified as K0 in the HD catalog.
66 Classified as G0 in the HD catalog.
67 Classified as F8 in the SAO catalog.
68 Classified as F0V by Straizys et al. (1989VilOB..83....3S) based on 
68  Vilnius photometry.
69 Classified as F5:V by Straizys et al. (1989VilOB..83....3S) based on 
69  Vilnius photometry.
70 Nearby, high proper motion star at 75 pc according to the Hipparcos catalog. 
70  Suspected metal-poor subdwarf by Reid et al. (2001MNRAS.325..931R).
71 HD 229291, classified in the visible as M0 (Neckel, 1958ApJ...128..510N).
72 HD 196360, classified in the visible as K0III (Bidelman, 1957PASP...69..147B)
73 Classified as a carbon star by Chen & Chen (2003AJ....125.2215C); 
73  the C2 1.77um feature is barely visible in our near-infrared spectrum.
74 Possible Class I/II member of DR 21 (Davis et al., 2007MNRAS.374...29D).
81 Source AFGL 2591.
82 Possibly associated to DR 5.