In 2018 Jeff Knudsen donated his 5000+ cassette tape collection to www.shnflac.net.
The ensuing GEMS Lossless Legs production is releasing each of these tapes as raw transfers in digital format, one file per cassette side.

Transfer info: Nakamichi CR-7A (Rebuilt by ESL August 2019) -> Sound Devices MixPre-3M
Transfer by: Jay Haines
Date on label: February 21, 1971

Here's what deadlists.com says occurred on this date and the sources in circulation at the time of this seed.
This release may or may not be one of these sources.
This entry is included as an aid to future researchers.
As always, listen, look at the pictures and judge for yourself.

Band 	Grateful Dead
Venue 	Capitol Theater
Location 	Port Chester, NY
Date 	2/21/71 - Sunday 	posters 	tickets, passes & laminates
One 	Cold Rain And Snow [5:49] ;
Me And Bobby McGee [5:56] ;
Loser [5:45] ;
Easy Wind [8:10] ;
Playing In The Band [4:45] ;
Bertha [5:16] ;
Me And My Uncle [3:13] ;
Ripple [4:24] ;
Next Time You See Me [4:08] ;
Sugar Magnolia [5:19] ;
Greatest Story Ever Told [4:04] >
Johnny B. Goode [3:13]
Two 	China Cat Sunflower [5:24] >
I Know You Rider [4:35] ;
Bird Song [6:05] ;
Cumberland Blues [4:41] ;
I'm A King Bee [7:00] ;
Beat It On Down The Line [2:57] ;
Wharf Rat [9:09] ;
Truckin' [8:03] ;
Casey Jones [4:38] ;
Good Lovin' >
Drums >
Good Lovin' [16:43] >
Uncle John's Band [7:12]
Comments 	Good Lovin' timing includes all parts
Recordings 	SBD 180
Master recording source(s): 7inch Master Reels@7.5ips 1/2trk
Download/Listen Sources

    source: aud cassette master; taped by Jim Cooper;
    source: aud cassette master taped by Jim Cooper;
    7" two track BBD reel w/ Dolby A @ 7 1/2 ips > PC
    SBD -> Master Reel -> CD
    SBD -> Dobly A Reel -> Dolby A decode -> DAT -> S
    Soundboard

Contributors 	paleo550@philly.infi.net (Gordon Sharpless); htj@geocities.com (Thayer Jennings)
Caretaker 	John Oleynick email update
********** The GEMS Knudsen Tape Project  **********

In 2018, Jeff Knudsen bestowed his tape collection to the AZ GEMS
team for distribution and archiving. We have cherry picked some shows
and released them but have only scratched the surface. The process
of producing a complete and accurate mastered file set is time consuming:
select the show, compare to existing sources, adjust the tape deck,
transfer to digital, speed correct, master, aquire the source ID and
torrent. We realized we would never release most of collection using this
method.

As long as music is on tapes in a closet, it is useless. If it circulates
it is preserved for others and for the future. Rather than go through
the whole file set creation process, we transfer each tape or tape
side as a single digital file. A two tape concert consists either two big
audio files, 1 for each tape or 4 big audio files, one for each side of
the two cassettes.  We transfer professionally using the best gear and
a high quality Analog to Digital device. The Azimuth and Dolby settings
are correct. We release these files for everyone. We do not evaluate
the quality of the source, master it, or track it.

The Knudsen Tape Project is about sharing the tapes.

In each numbered release, along with the digital music files, we
include a photo of the tapes. The goal is to release as many of the
tapes as possible to the website www.shnflac.net.

We think the fruits of this project will become more interesting as time
passes. We believe that access to raw, properly transferred audio will
be of value to both present and future listeners, researchers and others.
Audio mastering technology is moving at breakneck speed. We can only imagine
the future technology that will be available. Having access to unmastered sources
could be invaluable.

HISTORY

The collection was started with a box of tapes Jeff Knudsen recieved
from his friend Dick Latvala in the late 70's. Dick was just a regular
guy in Pahoa, Hawaii and had not yet begun officially working with the
Greatful Dead. Over time, Jeff's collection grew. At that time, tapes were
currency and Jeff had gold. His collection increased to about 5000 coveted
tapes, via mail trades and all night copy-athons. Jeff shared them freely
and widely. If you had a soundboard tape in your collection years ago there
is a good chance it came from Jeff Knudsen.

WHAT CAN I DO WITH IT ?

Every release in this project is from a band that allows it's fans
to trade music non-commercially. We neither add or take away from that
permission. We only ask that you credit the Knudsen Tape Project if you
use the material. We ask nothing else of you and you do not need
to ask permission to use them. Since we ask only for source credit, we would
rather not hear complaints. Take what you need and leave the rest.

LINEAGE QUESTIONS

The notion of documenting lineage is a modern one, or simply one Jeff
did not entertain. We do not have lineage information on most of these
tapes. Any information we have will be in the photo of the tapes.
Some of the tapes sound absolutely fantastic. Others may remind
you of a tape you had long ago.

Now the rest is up to the community, with whom we have absolute faith
in the ability to discern.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Contact shnflac@gmail.com if you need more information.


SHNTOOL OUTPUT

    length     expanded size    cdr  WAVE problems  fmt   ratio  filename
    42:40.123     737315582 B   cxx   --   ---xx   flac  0.7064  gd1971-02-21-1A.flac
    34:59.514     604660154 B   cxx   --   ---xx   flac  0.7052  gd1971-02-21-1B.flac
    45:10.916     780743756 B   cxx   --   ---xx   flac  0.6652  gd1971-02-21-2A.flac
    43:32.431     752380214 B   cxx   --   ---xx   flac  0.6781  gd1971-02-21-2B.flac
   166:22.984    2875099706 B                            0.6876  (4 files)

gd1971-02-21-1A.flac:a8e13de4bdc27de7a03654c66fc0808d
gd1971-02-21-1B.flac:ecd36d09b62618dc97609dacbe6ba5cb
gd1971-02-21-2A.flac:628ca916aa82602e3661f112ef73644f
gd1971-02-21-2B.flac:63d8710a8d827b337aa4b3bbe64bcc8c

6763834711c29feaa3988a321ae09b22 *gd1971-02-21-1A.flac
0bfc4eecb6fed84a73ea0abc78a52e2b *gd1971-02-21-1B.flac
2e229844e7a7c2184636f9e03e6fce94 *gd1971-02-21-2A.flac
9b374d6edcb61c56a6f958f3e86e658f *gd1971-02-21-2B.flac