Vertiflite is published four times a year and includes the AHS International Directory. The Annual Forum Proceedings are published annually to coincide with the Society's Annual Forum. Proceedings Specialists' Meeting Proceedings are published in conjunction or immediately following the meeting. The schedule and number of meetings varies each year. Specialists' Meeting Proceedings may be purchased as a complete set or by individual paper.
Prepayment is required for all subscriptions, singleissues, proceedings and individual papers.
Purchase orders are acceptedand invoices can be issued. Subscriptions are yearly and commence the first month following thereceipt of order and payment. Subscriptions cancelled in mid-year arenot refundable. Back dating of subscriptions is not permitted. Someback issues are available and may be purchased at the single copyrate.