Answer:

letter

Answer	Crossword Clue
LETTER	Play varsity ball
LETTER	Missive
LETTER	Bit of correspondence

LETTER	Card alternative
LETTER	Athletic honor
LETTER	Envelope insert
LETTER	Athletic reward
LETTER	Bit of romantic memorabilia
LETTER	Handwritten rarity, these days
LETTER	Alphabet soup bit
LETTER	Love ..

LETTER	Athlete's award
LETTER	Quote, part 4
LETTER	Athlete's reward
LETTER	Alternative to legal
LETTER	Script unit
LETTER	Alphabet soup item
LETTER	Word after fan or form
LETTER	Both words in each answer to a starred clue begin and end with the same one

LETTER	Varsity athlete's honor
LETTER	Bit of mail
LETTER	Piece of mail
LETTER	E-mail alternative
LETTER	To the .. (precisely)
LETTER	E or G, e.g.
LETTER	"Wheel of Fortune" guess
LETTER	Varsity award

LETTER	College athlete's award
LETTER	Envelope's contents, often
LETTER	Do calligraphy
LETTER	Bit of a monogram
LETTER	I, for one
LETTER	Inscribe
LETTER	Opposite of "spirit"
LETTER	Any monogram initial

LETTER	Piece of snail mail
LETTER	Uncommon writing of late
LETTER	Thing on a key
LETTER	Communication.
LETTER	Hester Prynne's mark.