Report for no known copyright audio on loc.gov

Query: https://www.loc.gov/audio/?fa=access-restricted:false%7Conline-format:audio&q=%22No+known+restrictions%22+OR+%22No+known+copyright+restriction%22+OR+%22Library+is+not+aware+of+any+copyrights%22&st=gallery (downloadable content only)
Total items retrieved from query: 5667
Total items with valid audio: 4930 (86.99%)
Total duration: 56d 18h 17m 42s
Median item duration: 8m 15s
Min item duration: 7s
Max item duration: 1h 5m 32s
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Subject (3305 unique values) / Top 25:
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3149 (63.87%)    interviews
1940 (39.35%)    field recordings
1714 (34.77%)    ethnography
1481 (30.04%)    sound recording
1365 (27.69%)    folklore
1330 (26.98%)    music
1236 (25.07%)    songs
602 (12.21%)     sound recordings
461 (9.35%)      oral history
431 (8.74%)      personal narratives
401 (8.13%)      georgia
349 (7.08%)      dialects
348 (7.06%)      english language
347 (7.04%)      language
335 (6.8%)       massachusetts
301 (6.11%)      virginia
258 (5.23%)      african americans
209 (4.24%)      north carolina
205 (4.16%)      narratives
199 (4.04%)      rhode island
196 (3.98%)      21st avenue (paterson, n. j.)
176 (3.57%)      social life and customs
167 (3.39%)      september 11 terrorist attacks
166 (3.37%)      italian americans
160 (3.25%)      spoken word
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Partof (41 unique values) / Top 25:
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4928 (99.96%)    american folklife center
2756 (55.9%)     american memory
1040 (21.1%)     the library of congress celebrates the songs of america
1040 (21.1%)     performing arts encyclopedia
711 (14.42%)     tending the commons: folklife and landscape in southern west virginia
711 (14.42%)     coal river folklife collection
685 (13.89%)     southern mosaic: the john and ruby lomax 1939 southern states recording trip
504 (10.22%)     chicago ethnic arts project collection
464 (9.41%)      blue ridge parkway folklife project
461 (9.35%)      working in paterson project collection
461 (9.35%)      working in paterson: occupational heritage in an urban setting
376 (7.63%)      south central georgia folklife project collection
355 (7.2%)       voices from the dust bowl: the charles l. todd and robert sonkin migrant worker collection, 1940-1941
349 (7.08%)      center for applied linguistics collection
349 (7.08%)      american english dialect recordings: the center for applied linguistics collection
330 (6.69%)      lowell folklife project collection
197 (4.0%)       rhode island folklife project collection
167 (3.39%)      september 11, 2001, documentary project
142 (2.88%)      montana folklife survey collection
84 (1.7%)        after the day of infamy: "man-on-the-street" interviews following the attack on pearl harbor
63 (1.28%)       voices remembering slavery: freed people tell their stories
63 (1.28%)       dear mr. president collection
30 (0.61%)       american dialect society collection, 1931-1937
28 (0.57%)       buckaroos in paradise: ranching culture in northern nevada, 1945-1982
28 (0.57%)       paradise valley folklife project collection
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Contributor (2413 unique values) / Top 25:
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693 (14.06%)     lomax, ruby t. (ruby terrill)
693 (14.06%)     lomax, john a. (john avery)
480 (9.74%)      hufford, mary
368 (7.46%)      sonkin, robert
366 (7.42%)      todd, charles l.
254 (5.15%)      unidentified
217 (4.4%)       johnson, geraldine niva
211 (4.28%)      fleischhauer, carl
202 (4.1%)       carroll, thomas d.
160 (3.25%)      taylor, david alan
149 (3.02%)      wolfe, charles k.
144 (2.92%)      denatale, douglas
127 (2.58%)      bailey, dave
122 (2.47%)      adler, thomas a.
112 (2.27%)      flynn, john
106 (2.15%)      robinson, beverly j.
96 (1.95%)       mullen, patrick
94 (1.91%)       burns, thomas a.
91 (1.85%)       stanton, gary ward
86 (1.74%)       levitas, susan
84 (1.7%)        stanley, david
78 (1.58%)       bell, michael edward
76 (1.54%)       johnson, paula j.
75 (1.52%)       owen, blanton
75 (1.52%)       rankin, tom
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Language (14 unique values) / Top 25:
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4805 (97.46%)    english
138 (2.8%)       spanish
56 (1.14%)       lithuanian
27 (0.55%)       french
14 (0.28%)       korean
11 (0.22%)       central khmer
8 (0.16%)        greek
6 (0.12%)        german
5 (0.1%)         serbo-croatian
5 (0.1%)         ukrainian
3 (0.06%)        danish
3 (0.06%)        japanese
3 (0.06%)        castilian
2 (0.04%)        swedish
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Dates (102 unique values) / Top 25:
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907 (15.57%)	 1977
687 (11.79%)	 1939
534 (9.16%)	 1994
472 (8.1%)	 1978
371 (6.37%)	 1979
291 (4.99%)	 1987
240 (4.12%)	 1996
239 (4.1%)	 1995
221 (3.79%)	 1940
187 (3.21%)	 1941
171 (2.93%)	 2001
144 (2.47%)	 1986
95 (1.63%)	 1988
92 (1.58%)	 1997
76 (1.3%)	 1903
69 (1.18%)	 1900
63 (1.08%)	 1942
62 (1.06%)	 1898
51 (0.88%)	 1904
51 (0.88%)	 1897
41 (0.7%)	 1901
41 (0.7%)	 1967
40 (0.69%)	 1899
40 (0.69%)	 1983
37 (0.63%)	 1975