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In order of addition to list:


[1] Mangalam, S.M. and Pfenninger, W., "Wind-Tunnel Tests on a High
    Performance Low-Reynolds Number Airfoil," AIAA Paper 84-0628,
    March, 1984.

    Pfenninger, W., and Vemuru, C.S., "Design of Low-Reynolds Number
    Airfoils -- I," AIAA Paper 88-2572-CP, AIAA 6th Applied
    Aerodynamics Conference, Williamsburg, VA, June 6-8, 1988,
    pp. 639-655.

    Pfenninger, W., Vemuru, C.S., Mangalam, S.M., and Evangelista, R.,
    "Design of Low-Reynolds Number Airfoils -- II," AIAA Paper
    88-3764-CP, AIAA 6th Applied Aerodynamics Conference, Williamsburg,
    VA, June 6-8, 1988, pp. 1305-1319.


[2] Althaus, D., "Niedriggeschwindigkeitsprofile," Friedr. Vieweg &
    Sohn Verlagsgesellschaft mbH (publisher) Braunschweig/Weisbaden,
    Germany, 1996, 591 pages.  ISBN 3-528-03820-9


[3] Drela airfoil links
    http://www.charlesriverrc.org/articles.htm
    http://www.charlesriverrc.org/articles/drela-airfoilshop/markdrela-ag-ht-airfoils.htm
    http://www.monkeytumble.com/hlg/supergee.htm [broken link]

    Additional airfoils added 6/8/2023:

    AG52 ... wing airfoils
    AG53
    AG54
    AG55
    HT33 ... tail surface airfoils
    HT34
    HT35

    These airfoils were designed for Mike Lachowski for his F3B competition RC sailplane designs.

    The AG5x are the wing airfoils:
    - Basically lower-camber versions of the AG40-43 which were aimed at F3J and TD. 
    - Longer laminar runs at the large Re ~ 600K, typical of an F3B speed run.
    - Intended hingeline is at 75% chord.
    - Trim flap range is -1 deg (speed)  to  +4 deg (float).
 
    The HT3x are the tail surfaces:
    - Replacements for the usual HT1x tail surface airfoils.
    - More laminar flow in an F3B speed run.
    

[4] Selig airfoils used on the Opus 100 inch span (standard class) RC
    sailplane (designed by Selig around ~1991).  These airfoils started
    life as proprietary sections, and on 12/6/02 they were made public.

    The Opus was available from http://www.nesail.com (Northeast Sailplane Products): 021206-opus.pdf



[5] Selig airfoils used on the carbon Blackhawk 113.5-inch span (open
    class) RC sailplane (designed by Selig around ~1991).  The Blackhawk
    is no longer produced.  These airfoils started life as proprietary
    sections, and on 12/6/02 they were made public.  Thanks go to the
    original backers of the Blackhawk project: Ray Olsen, Don Scegiel,
    and Doug Diesen (Scottsdale, AZ).

    Blackhawk vintage advertising: 020522-blackhawk.pdf



[6] How do I "know" this is the 1903 Wright Flyer even though in NACA
    Report 93 it does not say so explicitly?  I don't know; however, I
    am labeling it as such based on communications with Prof Fred Culick
    at Caltech.  He has done considerable research on the topic and
    believes that this airfoil is very close to the 1903 Wright Flyer
    airfoil.  Keep in mind this aircraft had deformable fabric-covered
    wrapping wings, so as hard as one might try it is only possible to
    approximate the 1903 Wright Flyer wing section with a single
    airfoil.

    MSS 
    Dec 12, 2002


[7] SA7024/5/6 were part of a low Reynolds number airfoil study
    involving trips.

    Gopalarathnam, A., Broughton, B.A, McGranahan, B.D, and Selig,
    M.S., "Design of Low Reynolds Number Airfoils with Trips," AIAA
    19th Applied Aerodynamics Conference, AIAA Paper 2001-2463,
    Anaheim, CA, June 2001.
    c50_2001_GopaBroughtMcGranahSelig_Trips_AIAA2001_2463.pdf



[8] Williamson, G.A. Experimental Wind Tunnel Study of Airfoils with
    Large Flap Deflections at Low Reynolds Numbers, Master's Thesis,
    Department of Aerospace Engineering, University of Illinois at
    Urbana-Champaign, Urbana, IL, 2012, 535 pages. Airfoils:
    AG40d-02r, AG455ct-02r, W1011, W1015 - all with very large flap
    deflections.
    [Download thesis]