2N2038 semiconductor manufactured by Sylvania, listed as 2N2038 (circa 1979).

2N2032 semiconductor manufactured by Sylvania, listed as 2N2032 (circa 1979).

2N2022 semiconductor manufactured by Sylvania, listed as 2N2022 (circa 1979).

2N2017 semiconductor manufactured by Sylvania, listed as 2N2017 (circa 1979).

2N2008 semiconductor manufactured by Sylvania, listed as 2N2008 (circa 1979).

2N2007 semiconductor manufactured by Sylvania, listed as 2N2007 (circa 1979).

2N2006 semiconductor manufactured by Sylvania, listed as 2N2006 (circa 1979).

2N2005 semiconductor manufactured by Sylvania, listed as 2N2005 (circa 1979).

2N2004 semiconductor manufactured by Sylvania, listed as 2N2004 (circa 1979).

2N2003 semiconductor manufactured by Sylvania, listed as 2N2003 (circa 1979).

2N2002 semiconductor manufactured by Sylvania, listed as 2N2002 (circa 1979).

2N2001 semiconductor manufactured by Sylvania, listed as 2N2001 (circa 1979).

2N2000 semiconductor manufactured by Sylvania, listed as 2N2000 (circa 1979).

2N1999 semiconductor manufactured by Sylvania, listed as 2N1999 (circa 1979).

2N1998 semiconductor manufactured by Sylvania, listed as 2N1998 (circa 1979).

2N1997 semiconductor manufactured by Sylvania, listed as 2N1997 (circa 1979).

2N1996 semiconductor manufactured by Sylvania, listed as 2N1996 (circa 1979).

2N1995 semiconductor manufactured by Sylvania, listed as 2N1995 (circa 1979).

2N1994 semiconductor manufactured by Sylvania, listed as 2N1994 (circa 1979).

2N1993 semiconductor manufactured by Sylvania, listed as 2N1993 (circa 1979).