The American Red Cross is asking blood donors to help prevent a summer shortage by making an appointment to give blood around the Independence Day holiday.

Cara Leyna Noble of the Red Cross says blood donations typically drop off during the summer months.

Donors of all blood types are needed, especially those with type O negative, B negative and A negative.

Anyone who donates blood through July 7th will get a commemorative Red Cross T-shirt while supplies last.

Visit or call 1-800 RED CROSS to find a nearby blood donation opportunity or scheduled an appointment.