I think this sums it up. These records - various forms, acknowledgements, confirmations, etc. - evidence payments of social benefits and allowances of any type, whether they be prenatal, maternal, spousal, child care, dependent care, health care, bereavement or burial. The source term does not specify that these are "social security" benefits/allowances (although we can safely assume that), not even that they are "social" (another logical guess). I would go with the more generic translation.
segély/ezés/i - (here) benefit, allowance (also: aid, assistance, support, subsidy)
egyéni - personal, individual
lap/ok - form/s, record/s, document/s, sheet/s