Should I send a "thank you" letter for an interview on a thank you card, or a business letter?

I would send a simple business letter. You want to appear professional, especially a job has been offered to you. You cannot go wrong with a letter, where as you *can* go wrong with a card. I'd play it safe.

I think she'd appreciate any thank you letter - in this day and age so much is just done by email! But if you got on really well on a personal level, then send her a personal hand written note. Be sure to include your address though if you want to follow through with the internship - maybe you could ask her to get her secretary to send you a few more details so you have a written record. Good luck.

If you send a thank you card, it should be extremely short. If you send a letter, then it should be detailed and should mention what you liked about the company, about their policies etc. Anything that will make her remember YOU. So, it is definitely up to you, but I prefer the business letter.

I've always been trained to handwrite on a card - it's more personal and will look like you really took the time. Plus people receive tons of typed letters but few personal cards and when's the last time you saw some typed letter propped up on someone's desk? Note: The more professionally attractive the card, the more likely they'll proudly display it on their desk!

Here's a good compromise:

Enclose in a large, flat envelope one beautiful short handwritten thank you card inside a thank you card envelope with the person's handwritten name AND a longer typed letter not folded but placed flat in the large envelope saying, "I wanted to send a card to thank you blah blah blah" and a longer explanation of what they did that you are thanking them for. Conclude with acceptance or rejection (or a request to meet again regarding) the internship.

I'm glad you get it that people who hold information interviews are worth their weight in gold.

Edit: Hey, just what north o said! I've always gotten a second interview or job offer whenever I've sent a NEAT professional card. I'm not talking a cheesy Hallmark card, but something like this:

http://images.google.com/imgres?imgurl=http://www....

Traditionally a thank-you note is in the form of a business letter.

I think a hand-written letter or card would seem a little over the top and unprofessional.

Personally I've found that typing is always better than handwriting, because many have a hard time reading script--just make sure you sign your name. Since she offered you an internship and it wasn't just a plain old interview, I think you should send the thanks business style, it looks more professional. Good Luck!

Buy a thank you card. It makes it more personal. A business card or letter is usually use.

Use a Thank You card .. tasteful and appropriate for the situation (nothing Hallmark gushy), sign the card a simple thank you.

And .. insert a typed, business letter thank you letter.

Definitely a business letter. You could personalize a bit, but you'll want to come across professional and illustrate your capabilities in correspondence.

Good luck in your job quest.

The letter shows a little more effort but is kinda...formal, cold. Find a nice card and send that with a nice (NEATLY) handwritten message.